What does "Anti-Cardiolipin Ab, IgM (RDL)" mean?

"(RDL)" is a Quest Diagnostics laboratory routing code — it stands for Reference Diagnostic Laboratory and indicates which Quest facility processed the sample. It has no effect on the result or its interpretation. The test and reference range are identical to a standard anticardiolipin IgM test.

What does "WarningHigh" mean on my cardiolipin IgM result?

"WarningHigh" or "WARNINGHIGH" is a standard lab reporting flag that appears when a result is above the reference range. It is not an emergency indicator — it simply means the result is elevated and warrants clinical review. Follow up with your doctor to discuss the result in context.

What does a low positive Cardiolipin Ab IgM mean?

A low positive result (12–20 MPL) is mildly elevated but often not clinically significant. Isolated low-titer IgM anticardiolipin antibodies — especially without concurrent IgG positivity — are frequently transient (caused by infection, medication, or normal variation) and are not reliably associated with thrombosis risk. Repeat testing after 12 weeks is essential. If the result normalises, it is not considered clinically significant.

What does "anticardiolipin IgM positive but IgG negative" mean?

If your IgM is positive but IgG is negative, this is generally a lower-risk pattern. The IgG isotype has the strongest association with APS clinical events (thrombosis, pregnancy loss). Isolated IgM positivity requires clinical context and repeat testing. Many people with this pattern do not develop APS, particularly at low positive levels.

What does an "indeterminate" Cardiolipin Ab IgM result mean?

An indeterminate result means the value is at the boundary of the reference range — not clearly positive, not clearly negative (typically 10–15 MPL). Repeat testing in 8–12 weeks is appropriate. A single borderline result has no clinical significance on its own.

What is the difference between Cardiolipin Ab IgM and IgG?

IgG and IgM are two different classes of anticardiolipin antibodies. IgG has the strongest association with APS and is the primary diagnostic criterion — high positive IgG carries a greater risk of blood clots and pregnancy loss than IgM. IgM alone, particularly at low positive levels, has weaker predictive value. Both are measured in the standard antiphospholipid panel.

What is antiphospholipid syndrome (APS)?

APS is an autoimmune condition in which persistent antiphospholipid antibodies (including anticardiolipin IgM and IgG) cause abnormal blood clotting. Clinical features include venous thrombosis (DVT, pulmonary embolism), arterial thrombosis (stroke, heart attack), recurrent miscarriage, and low platelet count. APS diagnosis requires both clinical criteria (a thrombotic event or pregnancy complication) and laboratory criteria (two positive antiphospholipid antibody results ≥12 weeks apart).

How often does APS cause a positive anticardiolipin IgM result?

Anticardiolipin antibodies are found in virtually all patients with definite APS, but many people with positive anticardiolipin antibodies never develop APS or its complications — particularly those with low-titer IgM-only positivity. The clinical significance depends on titer level, isotype (IgG vs IgM), persistence on repeat testing, and the presence of clinical features like prior thrombosis or pregnancy loss.

Can anticardiolipin antibodies go away?

Yes — particularly low-titer IgM anticardiolipin antibodies. Antibodies triggered by infection commonly normalise within weeks to months once the infection resolves. Drug-induced antibodies typically disappear after stopping the causative medication. Even some APS-associated antibodies fluctuate over time. This is precisely why two positive results at least 12 weeks apart are required for APS diagnosis — a single positive result may represent a transient elevation that resolves spontaneously.

Are false positive anticardiolipin IgM results common?

Yes. Transient false-positive anticardiolipin antibodies are common after infection — bacterial infections, viral infections (EBV, hepatitis C, COVID-19), syphilis, and malaria can all produce a positive result that disappears on repeat testing. Medications can also cause false-positive results. This is why the 12-week repeat rule is essential — a single positive result has very limited diagnostic value without confirmation.

Should I stop anticoagulants before the test?

Anticoagulant therapy (warfarin, heparin) can interfere with some antiphospholipid tests but generally does not affect the anticardiolipin ELISA test directly. However, the lupus anticoagulant test (which is often ordered alongside) is affected by anticoagulants. Discuss with your doctor whether to pause any medications before testing — do not stop anticoagulants without medical guidance.

Anti-Cardiolipin Ab IgM: What High, Low Positive & Normal Results Mean

Serum

Other names: Anti-Cardiolipin Ab IgM, Anticardiolipin Ab IgM, Anticardiolipin Antibody IgM, Cardiolipin Ab IgM, Cardiolipin IgM, Cardiolipin Antibody IgM, Cardiolipin IgM Antibody, Anti-Cardiolipin IgM, ACL IgM, ACA IgM, Anticardiolipin IgM, Cardiolipin Ab (IgM), Cardiolipin Ab IgM High, Anti-Cardiolipin Ab IgM (RDL), Anti-Cardiolipin Ab, IgM (RDL), Anticardiolipin Ab IgM Qn, Anticardiolipin Ab, IgM, Qn, Anticardiolipin Ab IgM QN, Phospholipid Ab IgM, Phospholipid Ab IgM S, Anti-Phospholipid IgM, Cardiolipin IgM EIA, Cardiolipin IgM, EIA, Se Cardiolipin IgM Ab Level, Serum Cardiolipin IgM Antibody Level, ACLA IgM, ACA IgM High, ACL IgM High, Cardiolipin IgM Abs, Cardiolipin IgM Ab, Cardiolipin Immunoglobulin M Antibody, WarningHigh Anticardiolipin Ab IgM Qn, WarningHigh Anti-Cardiolipin Ab IgM (RDL), Anticardiolipin IgM (French: Anticorps Anti-Cardiolipine IgM), Anticardiolipina IgM (Spanish/Portuguese), Anti-Cardiolipine IgM (Dutch/French), Cardiolipin AK IgM Erhöht (German), Антитела к кардиолипину IgM (Russian), Przeciwciała Antykardiolipinowe IgM (Polish), Anti-Kardiyolipin IgM (Turkish), تحليل Anti Cardiolipin IgM (Arabic), Anticardiolipina IgM Positivo (Spanish), Cardiolipin คือ (Thai), কার্ডিওলিপিন IgM (Bengali)

Optimal Result: 0 - 12 MPL.

Immune System

From Healthmatters.io Team and reviewed by HM Editorial Team

Written on May 22, 2026 | Last updated Updated on May 22, 2026

Lab Results Explained and Tracked

QUICK ANSWER

The Cardiolipin Ab IgM test measures IgM antibodies that target cardiolipin — a phospholipid in cell membranes. Elevated levels are associated with antiphospholipid syndrome (APS), a condition that increases the risk of abnormal blood clots and pregnancy complications.

Normal (negative): less than 12 MPL. Results above this threshold should be interpreted in context — many elevated results, particularly low-positive results, are temporary and not clinically significant.

A single elevated result is never diagnostic. APS requires two positive results at least 12 weeks apart.

Key takeaway: Low-positive or isolated IgM anticardiolipin results are often temporary and may not indicate APS. APS diagnosis requires persistent positivity on repeat testing at least 12 weeks apart. Transient false-positive anticardiolipin antibodies are common after infection. Some people with persistent antiphospholipid antibodies never develop blood clots or APS-related complications.

Result	MPL value	Meaning
Negative	< 12 MPL	Normal
Low positive	12–20 MPL	Often transient; repeat required
Moderate positive	20–40 MPL	APS workup warranted
High positive	> 40 MPL	APS diagnostic threshold

WHAT IS THE NORMAL RANGE FOR CARDIOLIPIN AB IgM?

The standard reference range is 0–12 MPL (IgM phospholipid units per milliliter). Results are typically interpreted in tiers:

Result	MPL value	Interpretation
Negative	< 12 MPL	No significant anticardiolipin IgM antibodies detected
Low positive	12–20 MPL	Mildly elevated; often transient; repeat required
Moderate positive	20–40 MPL	Clinically significant; APS workup warranted
High positive	> 40 MPL	Meets APS laboratory diagnostic threshold (if confirmed)

Reference ranges may vary slightly between laboratories. Some labs use GPL/MPL unit scales; others report in absolute units. Always interpret your result against the reference range printed on your specific lab report.

What does "2.0" or other low numbers mean? Many labs report cardiolipin Ab IgM on a scale where values well below 12 MPL (such as 2.0, 3.3, or 6.0) are simply negative — normal results with no clinical significance. These values are frequently seen in the GSC query data ("cardiolipin ab igm 2.0 meaning") and cause unnecessary concern. A result of 2.0 MPL is negative and normal.

WHAT DOES HIGH CARDIOLIPIN AB IgM MEAN?

A high result (above 12 MPL, and particularly above 40 MPL) means that IgM-class anticardiolipin antibodies are elevated in your blood. This can occur for several reasons — some clinically significant, some transient and not.

Common causes of high Cardiolipin Ab IgM:

Antiphospholipid syndrome (APS) — autoimmune condition causing persistent anticardiolipin antibodies, blood clots, and recurrent pregnancy loss. Requires two positive results ≥12 weeks apart for diagnosis.
Systemic lupus erythematosus (SLE/lupus) — anticardiolipin antibodies are found in 30–40% of lupus patients
Infections — bacterial infections, viral infections (including EBV/infectious mononucleosis), syphilis, malaria, hepatitis C, and COVID-19 can transiently elevate cardiolipin antibodies. These infection-induced elevations are usually temporary and not associated with increased clot risk.
Medications — certain drugs including procainamide, hydralazine, phenothiazines, and some antibiotics can induce anticardiolipin antibodies
Other autoimmune conditions — rheumatoid arthritis, Sjögren's syndrome, mixed connective tissue disease
Malignancy — certain cancers can be associated with elevated antiphospholipid antibodies
Older age without symptoms — mild, transient elevations are sometimes seen in older individuals with no underlying disease

The most important distinction: Whether the elevation is persistent (present on two tests ≥12 weeks apart) or transient (present once, normalises on repeat). Only persistent elevations are clinically significant.

LOW POSITIVE RESULT: WHAT DOES IT MEAN?

"Low positive" (12–20 MPL) is one of the most common and most anxiety-inducing results on this test — and one of the most frequently misunderstood.

The clinical reality: An isolated low-titer IgM anticardiolipin result is often not associated with an increased risk of thrombosis or pregnancy complications. The IgG isotype (not IgM) carries the strongest association with APS clinical events. Isolated IgM positivity, particularly at low titers, has weaker predictive value.

What a low positive means in practice:

It may be a transient result triggered by a recent infection
It may be a laboratory variation (borderline results can fluctuate around the threshold)
It requires repeat testing after 12 weeks before any clinical significance can be assigned
If it normalises on repeat testing, it is not considered clinically significant

"Anticardiolipin IgM positive but IgG negative": If your IgM is positive but IgG is negative, this is generally a lower-risk pattern. The IgG isotype is the primary diagnostic criterion for APS. Isolated IgM positivity requires clinical context before any diagnosis or treatment decision.

"Indeterminate" result: Some labs report results in the 10–15 MPL range as "indeterminate" or "borderline." This means the result is at the boundary of the reference range — not clearly positive, not clearly negative. Repeat testing is appropriate.

WHAT DOES "(RDL)" MEAN ON MY LAB REPORT?

"Anti-Cardiolipin Ab, IgM (RDL)" is the Quest Diagnostics test name — the "(RDL)" suffix stands for "Reference Diagnostic Laboratory" and indicates which Quest Diagnostics facility processed the sample. It does not affect the result, the reference range, or the clinical interpretation. This is purely a laboratory routing code.

The result and its interpretation are identical to any other anticardiolipin IgM test. If your report says "Anti-Cardiolipin Ab, IgM (RDL)" or "Anti-Cardiolipin Ab, IgM (RDL) High," interpret it the same as a standard anticardiolipin IgM result.

"WarningHigh" prefix: Some lab reports display "WarningHigh" or "WARNINGHIGH" before the test name when a result is flagged as above the reference range. This is a standard lab reporting flag — it does not indicate a medical emergency. It simply means your result is above the stated normal range and warrants clinical review.

CARDIOLIPIN IgM vs IgG vs IgA: WHAT'S THE DIFFERENCE?

Anticardiolipin antibodies come in three immunoglobulin classes. The page you are reading covers the IgM class specifically. Here is how the three differ clinically:

Isotype	APS association	Thrombosis risk	Notes
IgG	Strongest	Highest	Primary diagnostic criterion for APS; strongest correlation with clots and miscarriage
IgM	Moderate	Moderate	Clinically significant when high positive (>40 MPL) and persistent; isolated low IgM has weaker predictive value
IgA	Weaker	Lower	Not part of standard APS classification criteria; can occur with clinical APS when IgG and IgM are negative

For APS diagnosis, IgG and IgM are the relevant isotypes. IgA is tested in some panels but is not included in the official APS classification criteria (Sapporo/Sydney criteria).

ANTIPHOSPHOLIPID SYNDROME (APS): WHAT YOU NEED TO KNOW

APS (antiphospholipid syndrome) is the condition most closely associated with elevated cardiolipin Ab IgM. It is an autoimmune disorder in which persistent antiphospholipid antibodies cause the blood to clot more easily than normal.

APS clinical features:

Venous thrombosis (deep vein thrombosis, pulmonary embolism)
Arterial thrombosis (stroke, myocardial infarction)
Recurrent pregnancy loss (particularly second or third trimester)
Thrombocytopenia (low platelet count)
Livedo reticularis (mottled skin discoloration)

APS laboratory diagnostic criteria (Sapporo/Sydney criteria): To meet laboratory criteria for APS, one of the following must be present on two occasions at least 12 weeks apart:

Anticardiolipin IgG or IgM > 40 GPL or MPL, OR
Anti-beta-2 glycoprotein I IgG or IgM > 99th percentile, OR
Lupus anticoagulant positive

A single positive result does not meet APS criteria regardless of the level.

Primary vs secondary APS:

Primary APS — no underlying autoimmune disease
Secondary APS — occurs in the context of another autoimmune condition, most commonly SLE

Risk stratification: Not all APS antibody profiles carry the same risk. Persistent triple-positive antiphospholipid antibody profiles — lupus anticoagulant + anticardiolipin IgG/IgM + anti-beta-2 glycoprotein I — carry the highest thrombosis risk and the strongest indication for anticoagulation. Isolated low-titer IgM positivity represents the opposite end of the risk spectrum.

WHAT HAPPENS AFTER A POSITIVE RESULT?

For a first-time positive result:

Repeat the test in 12 weeks — this is the most important step. A single positive result is not diagnostic.
Review medications — certain drugs can transiently elevate results
Consider recent infections — a positive result following acute illness is often transient
Your doctor may order an expanded antiphospholipid panel including anticardiolipin IgG, anti-beta-2 glycoprotein I (IgG and IgM), and lupus anticoagulant

For a confirmed positive (two positives ≥12 weeks apart):

Referral to rheumatology is typically appropriate
Clinical context determines management: asymptomatic confirmed positive is managed differently from confirmed positive with prior thrombosis or pregnancy loss
Treatment may include aspirin, anticoagulation (warfarin, heparin, or newer anticoagulants), or hydroxychloroquine depending on clinical profile

Treatment in pregnancy: Pregnant women with confirmed anticardiolipin antibodies and prior pregnancy loss are often treated with low-dose aspirin and low-molecular-weight heparin (LMWH) to reduce miscarriage risk.

WHEN TO SEEK MEDICAL FOLLOW-UP

Seek prompt evaluation if a positive Cardiolipin Ab IgM result is accompanied by any of the following:

A prior unexplained blood clot (DVT, pulmonary embolism, stroke, or heart attack) — particularly in a young person without other risk factors
Recurrent miscarriage (two or more pregnancy losses, particularly in the second or third trimester)
A first stroke or TIA (transient ischaemic attack) under the age of 50
Symptoms of lupus — joint pain, butterfly facial rash, fatigue, photosensitivity, hair loss
Multiple positive antiphospholipid antibodies (both IgG and IgM positive, or positive alongside lupus anticoagulant or anti-beta-2 glycoprotein I)
A high-positive result (>40 MPL) even on a first test

Routine follow-up (no urgency) is appropriate if:

The result is low positive (12–20 MPL) with no symptoms
IgM is positive but IgG is negative
This is a first positive with no history of thrombosis or pregnancy loss

In both cases, repeat testing at 12 weeks is the essential next step.

FAQ about Cardiolipin Ab (IgM)

What does high Cardiolipin Ab IgM mean?

High Cardiolipin Ab IgM (above 12 MPL, particularly above 40 MPL) means elevated IgM-class antibodies against cardiolipin are present in the blood. The most significant cause is antiphospholipid syndrome (APS), an autoimmune condition associated with blood clots and pregnancy loss. However, elevated results also occur transiently with infections, medications, and other conditions. A single elevated result is never diagnostic — APS requires two positive results at least 12 weeks apart.
What is the normal range for Cardiolipin Ab IgM?

The standard normal range is 0–12 MPL (IgM phospholipid units per milliliter). Results below 12 MPL are negative. Results of 12–20 MPL are low positive, 20–40 MPL are moderate positive, and above 40 MPL are high positive. The >40 MPL threshold is the APS diagnostic criterion. Reference ranges vary between labs — always check the range on your specific report.
What does "Anti-Cardiolipin Ab, IgM (RDL)" mean?

"(RDL)" is a Quest Diagnostics laboratory routing code — it stands for Reference Diagnostic Laboratory and indicates which Quest facility processed the sample. It has no effect on the result or its interpretation. The test and reference range are identical to a standard anticardiolipin IgM test.
What does "WarningHigh" mean on my cardiolipin IgM result?

"WarningHigh" or "WARNINGHIGH" is a standard lab reporting flag that appears when a result is above the reference range. It is not an emergency indicator — it simply means the result is elevated and warrants clinical review. Follow up with your doctor to discuss the result in context.
What does a low positive Cardiolipin Ab IgM mean?

A low positive result (12–20 MPL) is mildly elevated but often not clinically significant. Isolated low-titer IgM anticardiolipin antibodies — especially without concurrent IgG positivity — are frequently transient (caused by infection, medication, or normal variation) and are not reliably associated with thrombosis risk. Repeat testing after 12 weeks is essential. If the result normalises, it is not considered clinically significant.
What does "anticardiolipin IgM positive but IgG negative" mean?

If your IgM is positive but IgG is negative, this is generally a lower-risk pattern. The IgG isotype has the strongest association with APS clinical events (thrombosis, pregnancy loss). Isolated IgM positivity requires clinical context and repeat testing. Many people with this pattern do not develop APS, particularly at low positive levels.
What does an "indeterminate" Cardiolipin Ab IgM result mean?

An indeterminate result means the value is at the boundary of the reference range — not clearly positive, not clearly negative (typically 10–15 MPL). Repeat testing in 8–12 weeks is appropriate. A single borderline result has no clinical significance on its own.
What is the difference between Cardiolipin Ab IgM and IgG?

IgG and IgM are two different classes of anticardiolipin antibodies. IgG has the strongest association with APS and is the primary diagnostic criterion — high positive IgG carries a greater risk of blood clots and pregnancy loss than IgM. IgM alone, particularly at low positive levels, has weaker predictive value. Both are measured in the standard antiphospholipid panel.
What is antiphospholipid syndrome (APS)?

APS is an autoimmune condition in which persistent antiphospholipid antibodies (including anticardiolipin IgM and IgG) cause abnormal blood clotting. Clinical features include venous thrombosis (DVT, pulmonary embolism), arterial thrombosis (stroke, heart attack), recurrent miscarriage, and low platelet count. APS diagnosis requires both clinical criteria (a thrombotic event or pregnancy complication) and laboratory criteria (two positive antiphospholipid antibody results ≥12 weeks apart).
How often does APS cause a positive anticardiolipin IgM result?

Anticardiolipin antibodies are found in virtually all patients with definite APS, but many people with positive anticardiolipin antibodies never develop APS or its complications — particularly those with low-titer IgM-only positivity. The clinical significance depends on titer level, isotype (IgG vs IgM), persistence on repeat testing, and the presence of clinical features like prior thrombosis or pregnancy loss.
Can anticardiolipin antibodies go away?

Yes — particularly low-titer IgM anticardiolipin antibodies. Antibodies triggered by infection commonly normalise within weeks to months once the infection resolves. Drug-induced antibodies typically disappear after stopping the causative medication. Even some APS-associated antibodies fluctuate over time. This is precisely why two positive results at least 12 weeks apart are required for APS diagnosis — a single positive result may represent a transient elevation that resolves spontaneously.
Are false positive anticardiolipin IgM results common?

Yes. Transient false-positive anticardiolipin antibodies are common after infection — bacterial infections, viral infections (EBV, hepatitis C, COVID-19), syphilis, and malaria can all produce a positive result that disappears on repeat testing. Medications can also cause false-positive results. This is why the 12-week repeat rule is essential — a single positive result has very limited diagnostic value without confirmation.
Should I stop anticoagulants before the test?

Anticoagulant therapy (warfarin, heparin) can interfere with some antiphospholipid tests but generally does not affect the anticardiolipin ELISA test directly. However, the lupus anticoagulant test (which is often ordered alongside) is affected by anticoagulants. Discuss with your doctor whether to pause any medications before testing — do not stop anticoagulants without medical guidance.

Lab Results Explained and Tracked

All Your Lab Results.
One Simple Dashboard.

What does it mean if your Cardiolipin Ab (IgM) result is too high?

A Cardiolipin Ab IgM result above 12 MPL is flagged as elevated. Results above 40 MPL meet the laboratory threshold for antiphospholipid syndrome (APS) — but only when confirmed on a second test at least 12 weeks later.

The 12-week rule is essential: A single elevated result, even a very high one, is not diagnostic for APS. Many causes of elevated cardiolipin antibodies are temporary — recent infection, medications, and other transient factors can all produce a positive result that resolves on repeat testing.

If your result is moderately or highly elevated (>20–40 MPL): Discuss with your doctor. An expanded antiphospholipid panel (adding anticardiolipin IgG, anti-beta-2 glycoprotein I, and lupus anticoagulant) and repeat testing in 12 weeks are the appropriate next steps.

If your result is low positive (12–20 MPL): Isolated low-titer IgM anticardiolipin antibodies — particularly without concurrent IgG positivity — are often not associated with thrombosis risk. Repeat testing to confirm persistence is essential before any clinical significance is assigned.

Related Health Conditions

All Your Lab Results.
One Simple Dashboard.

Import, Track, and Share Your Lab Results Easily

Import, Track, and Share Your Lab Results

Import lab results from multiple providers, track changes over time, customize your reference ranges, and get clear explanations for each result. Everything is stored securely, exportable in one organized file, and shareable with your doctor—or anyone you choose.

Cancel or upgrade anytime

What does it mean if your Cardiolipin Ab (IgM) result is too low?

A negative Cardiolipin Ab IgM result (below 12 MPL) means no significant IgM anticardiolipin antibodies were detected. This does not rule out antiphospholipid syndrome entirely — APS can be present with IgG or lupus anticoagulant positivity while IgM is negative. If APS is clinically suspected, a full antiphospholipid panel including IgG, IgA, lupus anticoagulant, and anti-beta-2 glycoprotein I should be considered.

Related Biomarkers

Article Review & Sources

All our content is backed by peer-reviewed studies, academic research, and trusted medical sources. We're committed to accuracy and transparency — see our editorial policy for details.

Laboratories

Bring All Your Lab Results Together — In One Place

We accept reports from any lab, so you can easily collect and organize all your health information in one secure spot.

Pricing Table

Gather Your Lab History — and Finally Make Sense of It

Finally, Your Lab Results Organized and Clear

Choose the plan that fits you — and turn scattered lab reports into clear insights you can finally use.

Pick a plan that fits you — and turn scattered lab reports into clarity.

Personal plans

Professional plan

$79/ year

Advanced Plan

Access your lab reports, explanations, and tracking tools.

Import lab results from any provider
Track all results with visual tools
Customize your reference ranges
Export your full lab history anytime
Share results securely with anyone
Receive 5 reports entered for you
Cancel or upgrade anytime

$250/ once

Unlimited Account

Pay once, access everything—no monthly fees, no limits.

Import lab results from any provider
Track all results with visual tools
Customize your reference ranges
Export your full lab history anytime
Share results securely with anyone
Receive 10 reports entered for you
No subscriptions. No extra fees.

Professional plan

$45/ month

Pro Monthly

Designed for professionals managing their clients' lab reports

Import lab results from any provider
Track lab results for multiple clients
Customize reference ranges per client
Export lab histories and reports
Share results and reports with clients
Invite clients to their accounts
Begin with first report entered by us
Cancel or upgrade anytime

About membership

What's included in a Healthmatters membership

Import Lab Results from Any Source

Easily upload lab results from any provider, whether it's a hospital, independent lab, or home testing service. We support PDFs, scanned documents, and JPEGs from patient portals. No need to log in to multiple platforms — everything is centralized in one secure space.

Easily upload lab results from any provider — we support PDFs, scans, and images. Keep all your reports organized in one secure place.

See Your Health Timeline

Every lab result is automatically organized on a chronological timeline, giving you a complete picture of your health journey. Whether you're tracking a condition, managing treatments, or staying proactive, the timeline helps you and your doctor understand how things progress over time.

Every lab result is automatically organized on a chronological timeline, giving you a complete picture of your health journey.

Understand What Your Results Mean

Whether it's a blood test, GI panel, urinalysis, or something else, lab reports measure numerous biomarkers that reveal what's happening inside your body. Our extensive database covers over 10,000 biomarkers, providing clear, simple explanations of what each result means and how you can take action—no matter your membership level. Say goodbye to confusion and get the insights you need to better understand your health.

Our database covers over 10,000 biomarkers with clear, simple explanations—so you can finally understand your results and what to do next.

Enter Your Lab Reports Yourself — Always Free Enter Your Lab Reports — Always Free

If you'd like to handle inputting your health data into your account, you can do so with our easy-to-use data entry forms. Our user-friendly form is designed to guide you through the quick and easy submission process, making it simple to keep track of your health metrics. This is available to both Advanced plan and Unlimited plan members.

Our user-friendly form guides you through a quick, simple submission process, making it easy to enter your health metrics.

Add your results anytime with our easy entry form. It's quick, guided, and helps you stay organized — free for all members.

Visualize Your Results

View your lab data through easy-to-read graphs and tables. Quickly spot patterns, track changes, and compare results across different dates — all without digging through multiple reports. You can also select and compare graphs of specific biomarkers side-by-side to better understand how they relate and change over time.

See your lab reports in clear graphs and tables. Spot patterns, track changes, and compare results over time — all in one place.

Export Your Complete Lab History in a Single File Export Your Complete Lab History

After collecting lab results from different providers, you can download your entire history combined into a single file. Choose from PDF, Excel, or CSV formats to easily review, share, or get a second opinion—no more juggling multiple reports.

After collecting lab results from different providers, you can download your entire history combined into a single file.

Comprehensive Data Entry Service for Your Reports Data Entry Service for Your Reports

Our inclusive service handles the data entry for your lab reports. Just submit your information and we'll take care of the rest. Advanced plan members receive five reports entered for free, then $15 per report after that. Unlimited plan members receive ten report entries for free, then $15 per report after that.

Our inclusive service handles the data entry for your lab reports. Just submit your information and we'll take care of the rest.

Securely Share With Anyone You Trust

Whether you're working with a doctor, nutritionist, caregiver, or wellness coach, you can securely share your complete lab history by sending an invite link to anyone you trust. You have full control over who sees your information and for how long, ensuring your privacy and peace of mind at every step.

Share your full lab history with your doctor, nutritionist, or coach using a secure invite link.

Discover

Let Your Lab Results Tell the Full Story

Once your results are in one place, see the bigger picture — track trends over time, compare data side by side, export your full history, and share securely with anyone you trust.

Bring all your results together to compare, track progress, export your history, and share securely.

I have been using Healthmatters.io since 2021. I travel all over the world and use different doctors and health facilities. This site has allowed me to consolidate all my various test results over 14 years in one place. And every doctor that I show this to has been impressed. Because with any health professional I talk to, I can pull up historical results in seconds. It is invaluable. Even going back to the same doctor, they usually do not have the historical results from their facility in a graph format. That has been very helpful.

Anthony

Unlimited Plan Member since 2021

What fantastic service and great, easy-to-follow layouts! I love your website; it makes it so helpful to see patterns in my health data. It's truly a pleasure to use. I only wish the NHS was as organized and quick as Healthmatters.io. You've set a new standard for health tracking!

Karin

Advanced Plan Member since 2020

As a PRO member and medical practitioner, Healthmatters.io has been an invaluable tool for tracking my clients' data. The layout is intuitive, making it easy to monitor trends and spot patterns over time. The ability to customize reports and charts helps me present information clearly to my clients, improving communication and outcomes. It's streamlined my workflow, saving me time and providing insights at a glance. Highly recommended for any practitioner looking for a comprehensive and user-friendly solution to track patient labs!

Paul

Healthmatters Pro Member since 2024

We implement proven measures to keep your data safe.

At HealthMatters, we're committed to maintaining the security and confidentiality of your personal information. We've put industry-leading security standards in place to help protect against the loss, misuse, or alteration of the information under our control. We use procedural, physical, and electronic security methods designed to prevent unauthorized people from getting access to this information. Our internal code of conduct adds additional privacy protection. All data is backed up multiple times a day and encrypted using SSL certificates. See our Privacy Policy for more details.

Anti-Cardiolipin Ab IgM: What High, Low Positive & Normal Results Mean

QUICK ANSWER

WHAT IS THE NORMAL RANGE FOR CARDIOLIPIN AB IgM?

WHAT DOES HIGH CARDIOLIPIN AB IgM MEAN?

LOW POSITIVE RESULT: WHAT DOES IT MEAN?

WHAT DOES "(RDL)" MEAN ON MY LAB REPORT?

CARDIOLIPIN IgM vs IgG vs IgA: WHAT'S THE DIFFERENCE?

ANTIPHOSPHOLIPID SYNDROME (APS): WHAT YOU NEED TO KNOW

WHAT HAPPENS AFTER A POSITIVE RESULT?

WHEN TO SEEK MEDICAL FOLLOW-UP

FAQ about Cardiolipin Ab (IgM)

What does high Cardiolipin Ab IgM mean?

What is the normal range for Cardiolipin Ab IgM?

What does "Anti-Cardiolipin Ab, IgM (RDL)" mean?

What does "WarningHigh" mean on my cardiolipin IgM result?

What does a low positive Cardiolipin Ab IgM mean?

What does "anticardiolipin IgM positive but IgG negative" mean?

What does an "indeterminate" Cardiolipin Ab IgM result mean?

What is the difference between Cardiolipin Ab IgM and IgG?

What is antiphospholipid syndrome (APS)?

How often does APS cause a positive anticardiolipin IgM result?

Can anticardiolipin antibodies go away?

Are false positive anticardiolipin IgM results common?

Should I stop anticoagulants before the test?

All Your Lab Results. One Simple Dashboard.

What does it mean if your Cardiolipin Ab (IgM) result is too high?

Related Health Conditions

All Your Lab Results. One Simple Dashboard.

Import, Track, and Share Your Lab Results Easily

Import, Track, and Share Your Lab Results

What does it mean if your Cardiolipin Ab (IgM) result is too low?

Related Biomarkers

Article Review & Sources

Bring All Your Lab Results Together — In One Place

Gather Your Lab History — and Finally Make Sense of It

Finally, Your Lab Results Organized and Clear

Advanced Plan

Unlimited Account

Pro Monthly

What's included in a Healthmatters membership

Import Lab Results from Any Source

See Your Health Timeline

Understand What Your Results Mean

Enter Your Lab Reports Yourself — Always Free Enter Your Lab Reports — Always Free

Visualize Your Results

Export Your Complete Lab History in a Single File Export Your Complete Lab History

Comprehensive Data Entry Service for Your Reports Data Entry Service for Your Reports

Securely Share With Anyone You Trust

Let Your Lab Results Tell the Full Story

Once your results are in one place, see the bigger picture — track trends over time, compare data side by side, export your full history, and share securely with anyone you trust.

Bring all your results together to compare, track progress, export your history, and share securely.

What Healthmatters Members Are Saying

Use promo code to save 10% off any plan.

We implement proven measures to keep your data safe.

All Your Lab Results.
One Simple Dashboard.

All Your Lab Results.
One Simple Dashboard.