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Lipoprotein Particles and Apolipoproteins: VLDL Cholesterol Cal

VLDL Cholesterol Cal: Meaning, Normal Range, High & Low

Serum Plasma

Other names: VLDL CHOLESTEROL CAL, VLDL CHOLESTEROL CALC, VLDL CHOLESTEROL CALCULATED, VLDL CALCULATED, VLDL CALC, VLDL-C, VLDL CHOL CAL, VLDL CHOLESTEROL, VERY LOW DENSITY LIPOPROTEIN (VLDL), CHOLESTEROL IN VLDL

check icon Optimal Result: 5 - 40 mg/dL, or 0.13 - 1.04 mmol/L.
Lipoprotein Particles and Apolipoproteins Cleveland HeartLab Atherosclerosis: Symptoms, Causes, Diagnosis, and Prevention
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From Healthmatters.io Team and reviewed by HealthMatters Editorial Team

Written on September 1, 2026 | on Sept. 1, 2026

At a Glance

VLDL (very-low-density lipoprotein) is a particle made by your liver that carries mostly triglycerides through the blood. VLDL cholesterol, or VLDL-C, is the cholesterol carried inside those particles.

"Cal" on your lab report means calculated. Your VLDL-C was not measured in a laboratory instrument. It was worked out by arithmetic from other numbers on the same report.

Which arithmetic depends on your laboratory, and this matters more than it sounds. LOINC 13458-5, the code that identifies this result, names two routes:

  • Friedewald route — VLDL-C ≈ triglycerides ÷ 5
  • Residual route — VLDL-C = total cholesterol − HDL-C − LDL-C

Which one produced your number follows from how your laboratory calculated LDL-C. Labcorp's panel reports LDL Chol Calc (NIH), so a Labcorp VLDL line is not a simple ÷ 5 estimate.

Where the divisor of 5 is used, it is an average rather than a fact about you. The Martin-Hopkins method, developed from triglyceride-to-VLDL-C ratios in more than 1.3 million people and described by Quest Diagnostics, replaces the fixed 5 with a table factor ranging from 3.1 to 11.9, set by the person's triglyceride and non-HDL cholesterol levels. One divisor cannot be right for everyone.

Above 400 mg/dL of triglycerides, the ÷ 5 estimate is not considered accurate. MedlinePlus and Testing.com both say so. The rule for LDL-C is different — Labcorp reports its calculated LDL-C up to 800 mg/dL — so the two lines on one panel carry two different limits.

Published reference ranges for VLDL disagree, and this page's band is one of the higher ones. The band plotted on this page is 5 - 40 mg/dL, the interval Labcorp prints beside VLDL Cholesterol Cal on its lipid panel. MedlinePlus publishes 2 to 30 mg/dL. Cleveland Clinic publishes below 30 mg/dL. The sources disagree at both ends — this page's band starts higher and ends higher — so a result of 3 is flagged Low here and sits inside MedlinePlus's interval, and a result of 35 is flagged Normal here and sits above theirs. The disagreement is real, it is not a typo, and the sections below say where each figure comes from rather than pretending it away.

Reference intervals differ between laboratories and methods, and a single value is interpreted alongside the rest of your lipid panel and your clinical history.

Interpretation money table

Your VLDL-C If the ÷ 5 method was used, roughly what triglycerides What it means
Below 5 mg/dL Below about 25 mg/dL Below the band plotted on this page, so your graph flags it Low. MedlinePlus's published interval starts at 2 mg/dL, so a result of 2 to 4 is flagged here and inside theirs. Low VLDL is not a target anyone treats toward, but a persistent value here is worth reading alongside the rest of your lipid panel — see the low-result section.
5 - 29 mg/dL About 25 - 145 mg/dL Inside every published range, including the narrowest. No interpretive tension.
30 - 40 mg/dL About 150 - 200 mg/dL The disputed band. Inside this page's plotted range, and at or above the level MedlinePlus and Cleveland Clinic call elevated. On the ÷ 5 method this is triglycerides of roughly 150 to 200 mg/dL: NCEP ATP III classes 150 - 199 borderline high and 200 high, so this band straddles a threshold rather than sitting inside one. Read this as borderline rather than as either "normal" or "high".
41 - 79 mg/dL About 205 - 395 mg/dL Above every published range. On the ÷ 5 method this is triglycerides of roughly 205 to 395 mg/dL, which NCEP ATP III classes high. The calculation is still inside the window where it is reported, though a fixed divisor of 5 tends to overstate VLDL-C as triglycerides rise. The triglyceride result is the finding.
80 - 99 mg/dL About 400 - 500 mg/dL At or above the point where the ÷ 5 estimate is not considered accurate. The triglyceride result is the finding, and a non-fasting result in this territory is repeated after fasting before conclusions are drawn.
100 mg/dL and above Above about 500 mg/dL Triglycerides in this territory carry a risk of acute pancreatitis alongside the cardiovascular concern, and are treated more urgently — NCEP ATP III classes 500 mg/dL and above very high. Contact your clinician rather than waiting for a routine follow-up. Where the ÷ 5 method was used, the VLDL figure is above the point at which that estimate is considered accurate and should not be read as precise.

Use the triglyceride figure printed on your own report, not the middle column. That column shows how tightly the two lines are coupled if your laboratory used the ÷ 5 method — not a way to work backwards to a number you already have. Under that method the VLDL line adds little your triglycerides did not already carry. Where VLDL-C is instead derived as total cholesterol − HDL-C − LDL-C, the two numbers will not divide neatly by five.

If you remember only one thing

Your VLDL number was calculated, not measured — and how it was calculated depends on your laboratory. Some derive it as triglycerides ÷ 5; others as total cholesterol minus HDL-C minus LDL-C. VLDL-C is related to your triglycerides — VLDL particles are what carry them — but the VLDL figure alone does not tell you whether your triglyceride result is high or low. Under the ÷ 5 route the two are directly linked; under the other route VLDL-C also depends on your total and HDL cholesterol. Read the triglyceride value printed on your report.

Two people, same result

Two people both have a VLDL Cholesterol Cal of 44 mg/dL.

The first has triglycerides of 220 mg/dL, at a laboratory using the fixed divisor: 220 ÷ 5 = 44.

The second has triglycerides of 260 mg/dL, at a laboratory using Martin-Hopkins, which selects the divisor from a table rather than always using 5. At his triglyceride and non-HDL cholesterol levels it is about 6, so his report also prints 44.

Higher triglycerides, same printed number — because the arithmetic behind the two lines is not the same arithmetic, and LOINC 13458-5 names two formulas laboratories choose between. What decides which situation you are in is not on the VLDL line. It is on the triglyceride line, and in the method your laboratory used.

What this result cannot tell you

  • How many VLDL particles you have. VLDL-C is the cholesterol carried in those particles, not a count. Particle counts come from NMR tests such as the VLDL-P and VLDL size panels.
  • Whether your VLDL is unusually cholesterol-rich or cholesterol-poor. That is the assumption the fixed divisor makes, and the Martin-Hopkins factor range of 3.1 to 11.9 exists because it does not hold across individuals.
  • Much that your triglycerides did not already tell you, where the ÷ 5 route was used. Where the laboratory instead derives VLDL-C from total cholesterol, HDL-C and LDL-C, the line carries more than the triglyceride result alone — and cannot be checked against it by dividing by five.
  • Whether you have atherosclerosis. No blood lipid value diagnoses arterial disease; imaging and clinical assessment do that.

Common interpretation mistakes

Treating VLDL as a second, confirming result. Where the ÷ 5 route was used, a raised VLDL alongside raised triglycerides is not two findings pointing the same way — it is one finding, printed twice.

Comparing your number to a range found online without checking which range. Published VLDL intervals differ by more than a third at the upper bound. A VLDL of 35 mg/dL is inside this page's plotted range and above the figure Cleveland Clinic and MedlinePlus publish — both true at once.

Assuming a VLDL line will be on every lipid panel. Many print total cholesterol, HDL-C, calculated LDL-C and triglycerides and no VLDL.

Reading a VLDL derived from very high triglycerides as a precise figure. Above 400 mg/dL the estimate is outside its validated range.

Assuming a low VLDL is automatically good news. A low triglyceride result is not in itself a problem — though a persistently very low VLDL has a short list of causes worth ruling out.

Questions your doctor may ask

  • Were you fasting, and for how long? Triglycerides respond to recent meals more than any other routine lipid.
  • How much alcohol do you drink, and any in the day or two before the draw?
  • Are you taking a corticosteroid, beta blocker, oestrogen, retinoid or antiretroviral? Several raise triglycerides.
  • Do you have diabetes, prediabetes, an underactive thyroid, or a family history of very high triglycerides or pancreatitis?
  • What did your previous lipid panels show? The direction of travel is more useful than one value.

Read together with

  • Triglycerides — read the two together; the triglyceride value is the finding.
  • Non-HDL cholesterol — total cholesterol minus HDL-C. It captures the cholesterol in LDL, VLDL and their remnants in one figure, and is a guideline-recognised treatment target in a way VLDL-C is not.
  • LDL-C — the two lines are linked, and which way round depends on the method. Under Friedewald, the triglycerides ÷ 5 step inside the LDL-C calculation is the VLDL-C estimate. Under a newer equation such as the NIH one Labcorp reports, LDL-C is calculated first and VLDL-C is what is left after subtracting it and HDL-C from total cholesterol.
  • Apolipoprotein B — one apoB molecule per atherogenic particle, so it counts particles rather than their cholesterol.
  • HbA1c or fasting glucose — raised triglycerides and insulin resistance travel together.

Clinical pearls

  • The Friedewald equation is where the fixed divisor lives. LDL-C = total cholesterol − HDL-C − (triglycerides ÷ 5). The subtracted term is the VLDL-C estimate, so where Friedewald is used your calculated LDL-C and your VLDL-C are two outputs of one calculation. Laboratories using Martin-Hopkins or the NIH equation carry no fixed ÷ 5 term at all, and LOINC 13458-5 names both routes for this result.
  • Martin-Hopkins replaced the constant with a lookup. Its adjustable factor spans 3.1 to 11.9 and was derived from more than 1.3 million people; it is more accurate at high triglycerides and at low LDL-C, particularly below 70 mg/dL.
  • 5 - 40 mg/dL is the band plotted on this page and the interval Labcorp prints on its lipid panel; 2 - 30 mg/dL is what MedlinePlus publishes. MedlinePlus notes that ranges vary between laboratories. Why the two cutoffs differ is not something either source explains, so this page states the difference without assigning a reason.
  • On the ÷ 5 method, a VLDL-C of 30 mg/dL corresponds to triglycerides of about 150 mg/dL — the point at which NCEP ATP III classes triglycerides borderline high (150 - 199; 200 and above is high).

Clinical Takeaway

VLDL Cholesterol Cal is a calculated value, not a measurement — and which calculation produced it depends on your laboratory. LOINC 13458-5 names two routes: triglycerides divided by five, or total cholesterol minus HDL-C minus LDL-C. Where the ÷ 5 route was used the line adds little beyond the triglyceride result behind it, and above 400 mg/dL of triglycerides it is not considered accurate. Published reference ranges genuinely disagree — this page plots 5 - 40 mg/dL, the interval Labcorp prints on its lipid panel, while MedlinePlus publishes 2 - 30 and Cleveland Clinic below 30 — so a result between 30 and 40 is borderline rather than clearly normal or clearly high, and a result between 2 and 4 is flagged Low here while sitting inside MedlinePlus's interval. The number to act on is the triglyceride figure printed on your own report, which this line tracks but does not replace.

In one sentence

Your VLDL Cholesterol Cal was calculated rather than measured, by one of two formulas depending on your laboratory, and the triglyceride result printed on the same report is the one that carries the meaning.

Bottom line

If your report says VLDL Cholesterol Cal, the "Cal" is telling you the number was calculated rather than measured. Which calculation depends on the laboratory: LOINC 13458-5 names both triglycerides ÷ 5 and total cholesterol − HDL-C − LDL-C, and Labcorp's panel, which prints this label, calculates LDL-C by the NIH equation rather than by Friedewald. Where the fixed divisor is used it is a population average — a method built from more than 1.3 million people replaces it with a factor ranging from about 3.1 to 11.9 depending on the rest of your lipid panel — and above 400 mg/dL of triglycerides the estimate is not considered accurate. Published normal ranges also disagree: this page plots 5 - 40 mg/dL, MedlinePlus publishes 2 - 30 mg/dL, and Cleveland Clinic calls 30 or above elevated, so a value in the thirties sits in genuinely contested territory. Look at the triglycerides line printed on your own report rather than working backwards from this one; that is where any change would have to start.

FAQ about VLDL Cholesterol Cal

  • What is VLDL cholesterol in a blood test?

    VLDL cholesterol is the amount of cholesterol carried in very-low-density lipoprotein particles, which mainly transport triglycerides through the blood. On a lipid panel it appears as its own line, labelled VLDL Cholesterol Cal on many reports — the "Cal" meaning the figure was calculated from other results on the panel rather than measured directly. It is reported in mg/dL.

  • What does "Cal" mean in VLDL Cholesterol Cal?

    "Cal" means calculated. Your VLDL cholesterol was not measured directly by an instrument — it was worked out by arithmetic from other numbers on the same panel. The LOINC code that identifies this test in health records, 13458-5, carries the method "Calculated", and names two formulas laboratories use: triglycerides divided by five, or total cholesterol minus HDL cholesterol minus LDL cholesterol.

  • What is a normal VLDL cholesterol range?

    Published ranges disagree. This page plots 5 - 40 mg/dL, MedlinePlus publishes 2 to 30 mg/dL, and Cleveland Clinic describes below 30 mg/dL as normal with 30 mg/dL or above as high. A result between 5 and 29 is inside every published range; a result between 30 and 40 is inside this page's band and above the other two, so it is best read as borderline. Below 5 this page flags Low, though MedlinePlus's published interval starts at 2.

  • Why do lab reports show 5-40 mg/dL when other sites say 30?

    Because the sources use different intervals. A Labcorp-format lipid report prints 5 - 40 mg/dL beside VLDL Cholesterol Cal, which is the band plotted on this page; MedlinePlus publishes 2 - 30 mg/dL and notes that ranges can vary between laboratories. Neither is a misprint, and no source found for this page explains why the two cutoffs differ. If the interval printed beside your own result differs from both, that is your laboratory's own interval and is the one your clinician will read against.

  • How is VLDL cholesterol calculated?

    By one of two formulas, depending on the laboratory. The traditional route estimates VLDL-C as your triglycerides divided by five — the same step that sits inside the Friedewald equation for LDL-C, where LDL-C = total cholesterol − HDL-C − (triglycerides ÷ 5) and the subtracted term is the VLDL-C estimate. The other route calculates LDL-C first by a newer equation such as Martin-Hopkins or the NIH equation, then derives VLDL-C as total cholesterol − HDL-C − LDL-C. LOINC 13458-5 names both.

  • Why doesn't my VLDL equal my triglycerides divided by 5?

    The likeliest reason is that your laboratory used the other formula. LOINC 13458-5, the code that identifies this result, names two routes: triglycerides divided by five, or total cholesterol minus HDL cholesterol minus LDL cholesterol. Labcorp's lipid panel, which prints this exact label, calculates LDL cholesterol by the NIH equation rather than by Friedewald, so a fixed divide-by-five relationship between the two lines should not be assumed. Neither figure is wrong; they are different calculations of the same quantity.

  • Is the divide-by-5 rule accurate?

    Not for everyone, and not every laboratory uses it. The divisor of five is a population average, and the Martin-Hopkins method — derived from triglyceride-to-VLDL-C ratios in more than 1.3 million people — replaces it with an adjustable factor ranging from 3.1 to 11.9. That method is more accurate at high triglyceride levels and at low LDL-C levels, particularly below 70 mg/dL. Where a laboratory uses it, or the NIH equation, your VLDL line will not equal your triglycerides divided by five.

  • When is the VLDL calculation not valid?

    Above 400 mg/dL of triglycerides, at which point the divide-by-five estimate is no longer considered accurate. MedlinePlus and Testing.com both give that limit. The rule for LDL-C is different: Labcorp states its calculated LDL-C is unavailable only above 800 mg/dL, so a report can carry a calculated LDL-C and no VLDL at all.

  • What does a VLDL cholesterol of 10, 13, or 24 mean?

    All three sit inside every published VLDL range, including the narrowest. Where the divide-by-five method was used they correspond to triglycerides of roughly 50, 65 and 120 mg/dL, all of which NCEP ATP III classes normal. No follow-up is prompted by the VLDL line at these values; read them alongside the rest of your lipid panel rather than on their own.

  • What does a VLDL cholesterol of 14 or 15 mean?

    Both sit comfortably inside every published VLDL range, including the narrowest. Where the divide-by-five method was used, a VLDL of 14 to 15 mg/dL corresponds to triglycerides of roughly 70 to 75 mg/dL. There is no interpretive tension at this level and no follow-up is prompted by the VLDL line itself.

  • What does a VLDL cholesterol of 30 mean?

    A VLDL of 30 mg/dL is the exact point where published sources part company: it is inside this page's 5 - 40 mg/dL band and at the level MedlinePlus and Cleveland Clinic call elevated. Where the divide-by-five method was used it corresponds to triglycerides of about 150 mg/dL — the point at which NCEP ATP III classes triglycerides borderline high, a band running 150 to 199, with 200 and above classed high. Read it as borderline rather than as clearly normal or clearly high.

  • What does a VLDL cholesterol of 40 mean?

    A VLDL of 40 mg/dL is at the top of the band plotted on this page and above every other published range. Where the divide-by-five method was used it corresponds to triglycerides of about 200 mg/dL, which NCEP ATP III classes high rather than borderline high. Read the triglyceride figure printed on your own report; that is the finding.

  • What does a VLDL cholesterol of 42 or 47 mean?

    Both are above every published VLDL range. Where the divide-by-five method was used they correspond to triglycerides of roughly 210 and 235 mg/dL, which NCEP ATP III classes high. The calculation is still inside the window where it is reported at these levels, though a fixed divisor of five tends to overstate VLDL-C as triglycerides rise. Read the triglyceride value printed on your report; that is the result to discuss.

  • Is high VLDL cholesterol dangerous?

    A raised VLDL is not in itself an emergency, though how urgent it is depends on how high the triglycerides behind it are. Raised triglycerides, which a raised VLDL is reported alongside, are one contributor to cardiovascular risk and are assessed alongside LDL cholesterol, HDL cholesterol, blood pressure, blood sugar and smoking rather than on their own. Triglycerides above about 500 mg/dL carry a risk of acute pancreatitis as well, and are treated more urgently; read that threshold off the triglyceride line on your report, and contact your clinician rather than waiting for a routine follow-up.

  • What does it mean if my VLDL is calculated high?

    It means the arithmetic behind the line produced a figure above the plotted range. VLDL-C is related to triglycerides, but the VLDL value alone does not tell you whether the triglyceride result is high — that depends on which formula your laboratory used, so read the triglyceride value printed on your report rather than inferring it. Common contributors include refined carbohydrate and alcohol intake, excess weight, physical inactivity, type 2 diabetes or insulin resistance, an underactive thyroid, and several medications including corticosteroids, beta blockers and oestrogens.

  • Should I worry about a low VLDL cholesterol?

    A single low VLDL result on an otherwise unremarkable lipid panel is not a cause for concern, and low VLDL causes no symptoms of its own. A low triglyceride result is not in itself a problem either. Where total cholesterol, LDL cholesterol and apolipoprotein B are also low, the causes worth ruling out include malnutrition, malabsorption, an overactive thyroid, chronic liver disease and malignancy, and uncommonly a handful of inherited conditions — none of which is diagnosed from a VLDL line alone.

  • Why is there no VLDL on my lipid panel?

    Many standard lipid panels report total cholesterol, HDL cholesterol, calculated LDL cholesterol and triglycerides without printing a separate VLDL line, and its absence does not mean anything was missed. Because VLDL-C is calculated rather than measured, whether it is printed at all is a decision the laboratory makes about its own panel. If your panel has triglycerides, read that result alongside VLDL-C; only the traditional ÷ 5 route derives VLDL-C directly from triglycerides.

  • What is the difference between VLDL and LDL?

    VLDL particles are made and released by the liver carrying mostly triglycerides. As enzymes strip that triglyceride away in the bloodstream, VLDL shrinks through an intermediate form (IDL) into LDL, which carries mostly cholesterol. Both contribute to plaque: the European Atherosclerosis Society consensus states that apoB-containing lipoproteins up to about 70 nm across — a group it lists as including VLDL and VLDL remnants, IDL, LDL and Lp(a) — can cross the artery wall lining, with only the largest particles excluded. On a lab report the practical difference is that VLDL-C is calculated rather than measured, while LDL-C may be either calculated or measured directly.

  • How do I lower my VLDL cholesterol?

    VLDL-C is not treated as a target of its own. Because VLDL particles carry triglycerides, the two move together, so anything aimed at this number is really aimed at the triglyceride result behind it. What that involves depends on why the triglycerides are raised, on your wider cardiovascular risk, and on a plan made with your clinician; the triglycerides page covers the management detail.

  • Is VLDL cholesterol the same as non-HDL cholesterol?

    No. Non-HDL cholesterol is total cholesterol minus HDL cholesterol, so it captures the cholesterol carried in LDL, VLDL and their remnants together in one figure. VLDL-C is only the VLDL portion. Non-HDL cholesterol is a recognised treatment target in lipid guidance in a way that VLDL-C on its own is not.

  • Does VLDL cholesterol need to be measured fasting?

    The VLDL line follows the triglyceride line, and triglycerides respond strongly to recent meals and alcohol. The 2026 ACC/AHA dyslipidemia guideline accepts a non-fasting lipid panel for routine assessment. A markedly raised non-fasting triglyceride result is repeated after a fasting period before conclusions are drawn about it. Whether fasting is required for your panel is set by the ordering clinician and the laboratory.

What does it mean if your VLDL Cholesterol Cal result is too high?

A VLDL Cholesterol Cal result above the range plotted on this page means the calculation behind it produced a figure above 40 mg/dL. VLDL-C is related to triglycerides — VLDL particles are what carry them — but the VLDL value alone does not tell you whether the triglyceride result is high or low. Under the ÷ 5 route a figure above 40 corresponds to triglycerides above roughly 200 mg/dL; under the other route VLDL-C also depends on your total and HDL cholesterol, so it fixes no triglyceride value at all. Read the triglyceride value printed on your own report. That is the finding.

Read the triglyceride number first — the one printed on your report. Raised triglycerides accompany a diet high in refined carbohydrate or alcohol, excess weight, physical inactivity, type 2 diabetes or insulin resistance, and an underactive thyroid. Several medications raise them, including corticosteroids, beta blockers, oestrogens, retinoids and some antiretrovirals. Inherited disorders of triglyceride metabolism account for a smaller share and tend to produce much higher values.

Above 400 mg/dL of triglycerides, the divide-by-five estimate is not considered accurate. MedlinePlus and Testing.com both give that limit. The corresponding rule for LDL-C is different: Labcorp states its calculated LDL-C is unavailable only above 800 mg/dL, so the two lines on one panel carry two different limits. At triglyceride levels this high, the lipid profile is interpreted as a whole — using non-HDL cholesterol and apolipoprotein B alongside whichever LDL-C estimate or measurement the laboratory and setting call for.

Where the number is high enough to need prompt attention. NCEP ATP III classes triglycerides of 500 mg/dL and above as very high, and directs that they be lowered first to prevent pancreatitis. Read that threshold off the triglyceride line on your report rather than off this one — at that level many laboratories will not have printed a VLDL figure at all. At 500 mg/dL and above the risk of acute pancreatitis is added to the cardiovascular concern, and the result warrants contacting your clinician rather than waiting for a routine follow-up.

Where the interpretation is genuinely contested. Between 30 and 40 mg/dL, this page's plotted band shows Normal while MedlinePlus and Cleveland Clinic would call the value elevated. That is a real disagreement between published sources rather than an error on either side, and a result in that window is best read as borderline. On the ÷ 5 method it corresponds to triglycerides of roughly 150 to 200 mg/dL: NCEP ATP III classes 150 to 199 borderline high and 200 high, so the band straddles that line rather than sitting inside it.

What tends to happen next. A non-fasting triglyceride result of 400 mg/dL or more is repeated after a fasting period, because triglycerides respond strongly to recent meals and alcohol. Your clinician will look at non-HDL cholesterol, which captures the cholesterol in both LDL and VLDL in a single figure and is a recognised treatment target in a way VLDL-C alone is not. Where triglycerides are very high, the risk of pancreatitis is added to the cardiovascular concern, and treatment becomes more urgent.

Related Health Conditions

What does it mean if your VLDL Cholesterol Cal result is too low?

A VLDL Cholesterol Cal result below the range plotted on this page means the calculation produced a figure under 5 mg/dL. Where the divide-by-five route was used that corresponds to triglycerides under roughly 25 mg/dL; where it did not, the VLDL line does not fix the triglyceride figure and the triglyceride value printed on your report is the one to read. This page plots a lower bound, so a result underneath it is flagged — but low VLDL is not a condition, causes no symptoms of its own, and is not something treatment aims to correct.

A low VLDL-C is not in itself a problem. It is the accompanying picture — the rest of the lipid panel, and the triglyceride value printed on your report — that decides whether it means anything.

When a persistently very low value is worth investigating. A VLDL-C under 5 mg/dL is uncommon; on the divide-by-five method it would correspond to triglycerides under roughly 25 mg/dL, though under the other route it does not fix the triglyceride figure. It is read as part of a wider picture rather than on its own. Where total cholesterol, LDL cholesterol and apolipoprotein B are also low, the causes worth ruling out include malnutrition, malabsorption, an overactive thyroid, chronic liver disease and malignancy, and — uncommonly — inherited conditions affecting the apoB-containing lipoproteins, such as familial hypobetalipoproteinemia, abetalipoproteinemia, chylomicron retention disease, PCSK9 loss-of-function variants and familial combined hypolipidemia.

None of these is diagnosed from a VLDL line. Each would be pursued through the fuller lipid picture — particularly total cholesterol, LDL-C and apolipoprotein B — together with symptoms, family history and other blood work. A single low VLDL result on an otherwise unremarkable panel is not a reason for alarm.

One thing the low band does not mean. MedlinePlus's published interval starts at 2 mg/dL, so a result between 2 and 4 is flagged Low by the band plotted here while sitting inside the interval that source publishes. That is the same disagreement between published ranges that shows at the top of the band, seen from the other end.

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