Explore our database of over 4000 laboratory markers.

Search and Understand 4000+ Biomarkers

Antithyroid Antibody

Blood

Thyroid Panel

Optimal range:   0 - 60 U/mL

Antithyroid antibodies are crucial biomarkers for diagnosing and managing autoimmune thyroid diseases like Hashimoto's thyroiditis and Graves' disease. Detecting these antibodies early can lead to better treatment outcomes, helping to prevent long-term complications related to thyroid dysfunction. If you have symptoms of thyroid imbalance or a family history of autoimmune disorders, testing for antithyroid antibodies is a key step in protecting your thyroid health.

LEARN MORE

Apo B : Apo A-1

Lipid Panel

Optimal range:   0 - 0.8 Ratio

Studies have shown that the ratio of apolipoprotein A-1:apolipoprotein B may correlate better with increased risk of coronary artery disease (CAD) than total cholesterol, and LDL:HDL ratio.

LEARN MORE

ApoA-I

Lipid Panel

Optimal range:   160 - 200 mg/dL

ApoA-I, or Apolipoprotein A-I, plays a crucial role in understanding heart health and managing potential risks related to cardiovascular diseases. ApoA-I is the main protein component of high-density lipoprotein (HDL) in the blood. HDL is often referred to as "good cholesterol" because it helps transport cholesterol from the arteries to the liver, where it can be processed and removed from the body. This process is essential for maintaining healthy artery walls and preventing the build-up of plaques that can lead to heart attacks and strokes. Higher levels of ApoA-I and consequently HDL are generally associated with a lower risk of heart disease. The measurement of ApoA-I in a lipid panel provides valuable information about a person's HDL levels and overall cardiovascular health. By assessing ApoA-I, healthcare providers can better understand an individual's risk for heart disease and tailor treatment plans to improve heart health, such as recommending lifestyle changes or prescribing medication to manage cholesterol levels effectively. 

LEARN MORE

Apolipoprotein A-1

Lipoprotein Particles and Apolipoproteins, Cleveland HeartLab

Optimal range:   102 - 200 mg/dL , 1.02 - 2.00 g/L

Apolipoprotein A is a protein carried in HDL ("good") cholesterol. It helps start the process for HDL to remove bad types of cholesterol from your body. In this way, apolipoprotein A can help to lower your risk for cardiovascular disease. Apolipoprotein A levels can be measured. But it's more common to measure the HDL and LDL ("bad") cholesterol when looking at cardiovascular risk.

This biomarker is useful for:

- Evaluating risk for atherosclerotic cardiovascular disease

- Aiding in the detection of Tangier disease

LEARN MORE

Apolipoprotein A-1

NutriStat, NutriPATH

Optimal range:   1.1 - 1.8 g/L

Apolipoprotein A is a protein carried in HDL ("good") cholesterol. It helps start the process for HDL to remove bad types of cholesterol from your body. In this way, apolipoprotein A can help to lower your risk for cardiovascular disease. Apolipoprotein A levels can be measured. But it's more common to measure the HDL and LDL ("bad") cholesterol when looking at cardiovascular risk.

This biomarker is useful for:

- Evaluating risk for atherosclerotic cardiovascular disease

- Aiding in the detection of Tangier disease

LEARN MORE

Apolipoprotein B

NutriStat, NutriPATH

Optimal range:   0.7 - 1.2 g/L

LEARN MORE

Apolipoprotein B

Lipoprotein Particles and Apolipoproteins, Cleveland HeartLab

Optimal range:   0 - 90 mg/dL , 0.00 - 0.90 g/L

- Apolipoprotein B (apoB) levels are used to evaluate the risk for cardiovascular disease. 
- LDL and its major protein, apolipoprotein B, play an essential role in lipid transport and metabolism. 
- ApoB levels are higher in males than in females and tend to increase with age.
- ApoB plays a central role in carrying cholesterol and triglycerides from the liver and gut to utilization and storage sites.
- Incontestable data support the concept that apoB is a better tool to assess cardiovascular disease than LDL-C and non-DHL-C.

LEARN MORE

Apolipoprotein B/A1 Ratio

Lipoprotein Particles and Apolipoproteins, Cleveland HeartLab

Optimal range:   0 - 0.77 Ratio

Studies have shown that the ratio of apolipoprotein A-1:apolipoprotein B may correlate better with increased risk of coronary artery disease (CAD) than total cholesterol, and LDL:HDL ratio.

LEARN MORE

Apolipoprotein E (APOE)

Lipid Panel

Optimal range:   2.7 - 4.3 mg/dL

Apolipoprotein E (APOE) is a protein that plays a crucial role in the metabolism of fats (lipids) in the body. It is primarily involved in transporting cholesterol and other lipids through the bloodstream to be used, stored, or eliminated. APOE is a key component of lipoproteins, which are molecules that carry cholesterol and fats to and from cells.

APOE is also known for its genetic variations, which can influence cholesterol levels, cardiovascular health, and even neurological function. However, in lab tests, the focus is usually on APOE levels in the blood, which may indicate how effectively the body manages lipid metabolism.

LEARN MORE

Apoprotein B100 (ApoB 100)

Lipoprotein Particles and Apolipoproteins, Cleveland HeartLab

Optimal range:   0 - 80 mg/dL

Apolipoprotein B100 (apoB100) is a building block of very low-density lipoproteins (VLDLs), intermediate-density lipoproteins (IDLs), and low-density lipoproteins (LDLs). These related molecules all transport fats and cholesterol in the bloodstream.

LEARN MORE

Appear CSF

Spinal fluid

Cerebrospinal Fluid (CSF) Analysis

Reference range:   Clear, Yellow, Orange, Pink

Cerebrospinal fluid (CSF) is a clear, watery liquid that flows around the brain and spinal cord, surrounding and protecting them. CSF testing is performed to evaluate the level or concentration of different substances and cells in CSF in order to diagnose conditions affecting the brain and spinal cord (central nervous system).

The appearance of the sample of CSF is usually compared to a sample of water.

LEARN MORE

Appearance

Synovial fluid

Cell Count and Differential, Synovial Fluid, Quest Diagnostics

Reference range:   Clear, Hazy, Cloudy

Normal joints contain a small volume of synovial fluid that is highly viscous, clear, and essentially acellular.

Clarity: Increased opacity of the fluid is usually due to abnormally large numbers of nucleated or red blood cells (RBCs). However, translucent or even opaque fluid may be the result of acellular material. Examples include lipids in fat necrosis, chyle droplets, or innumerable monosodium urate (MSU) crystals aspirated from gouty tophi.

LEARN MORE

Appearance

Semen analysis

Reference range:   Milk white, Yellow, Green, Pinkish-red, Black

Semen is typically whitish-gray with a jelly-like texture, but it can fluctuate with different lifestyle changes. Unless you’re experiencing other symptoms, temporary changes in the color of your semen usually aren’t a cause for concern.

If your semen is a different color than usual, take a few moments to scan your body for other changes.

Semen that’s tinged with yellow, green, pink, red, orange, or brown isn’t ideal, but it may not be cause for concern unless it’s accompanied by other unusual symptoms.

Genital soreness, itching, or burning could point to an underlying infection or other condition. When it comes to consistency, semen that’s thicker than usual could be a sign of dehydration.

LEARN MORE

Appearance

Urine

Urinalysis

Reference range:   Clear, Cloudy, Extremely Turbid, Turbid

Urine appearance can serve as an essential indicator of an individual's health status. Normal urine is typically clear and pale yellow in color, indicating proper hydration and the absence of significant health issues. However, various factors can influence urine appearance, such as hydration levels, diet, medications, and certain medical conditions.

LEARN MORE

Apple

Array 10 - Multiple Food Immune Reactivity Screen, Cyrex Laboratories

Optimal range:   0.2 - 1.5 ELISA Index

LEARN MORE

Apple Cider

Array 10 - Multiple Food Immune Reactivity Screen, Cyrex Laboratories

Optimal range:   0.3 - 1.3 ELISA Index

LEARN MORE

Apricot

Array 10 - Multiple Food Immune Reactivity Screen, Cyrex Laboratories

Optimal range:   0.2 - 2.8 ELISA Index

LEARN MORE

Arabinitol

OMX Organic Metabolomics / Diagnostic Solutions, Diagnostic Solutions Laboratory | GI-MAP & Food Sensitivity Tests

Optimal range:   0 - 9 nmol/mg Creatinine

- Evaluate for consumption of foods and pharmaceuticals that contain arabinitol.

- Because a common substrate for the production of arabinitol in the body is glucose, reduced intake of dietary sugars is a key therapeutic area for elevated arabinitol.

- Urinary arabinitol has been noted as a marker for invasive candidiasis or infection by Candida fungal species, though other genera are capable of production.

- Microbiome analysis is a reasonable next step if high levels of arabinitol are found in the urine. Treatment of an imbalanced microbiome can help reduce the overgrowth of pathogenic species that have been found to produce arabinitol.

LEARN MORE

Arabinitol

Urine

NutriStat Basic Profile, US BioTek

Optimal range:   0 - 79.5 ug/mgCR

LEARN MORE

Arabinose

Metabolic Analysis Markers (Urine)

Optimal range:   0 - 96 mmol/mol creatinine

Breakdown product of hyaluronic acid; also found in certain foods.

LEARN MORE
Showing results 1281 - 1300 of 6954