The Biomarker Library

Every marker, explained.

160 biomarkers across 13 body systems. The reference for what your blood can tell you — heart, hormones, thyroid, inflammation, liver, kidneys, longevity.

0Biomarkers
0Body systems
1Blood draw

First, the basics

What is a biomarker?

A biomarker is a measurable substance in your body that can indicate a biological state or process. Blood biomarkers — like cholesterol, hormones, vitamins, and inflammatory proteins — give a snapshot of how each of your body's systems is functioning.

160 of 160 biomarkers shown

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Every marker, A to Z

All 155 biomarker pages in the library, in one list. Each one explains what the marker measures, what moves it, and what a physician looks for.

% Free PSA Ratio 11-Deoxycortisol 17α-Hydroxyprogesterone Adiponectin (calculated) Albumin Albumin (for free T calc) Albumin : Globulin Ratio Alkaline Phosphatase (ALP) Allostatic Load Index ALT (Alanine Aminotransferase) Aluminum Amylase ANA Pattern ANA Screen ANA Titer Anion Gap Anti-Müllerian Hormone (AMH) ApoB : ApoA-I Ratio Apolipoprotein A-I (ApoA-I) Apolipoprotein B (ApoB) Arsenic AST (Aspartate Aminotransferase) AST : ALT Ratio Basophils (absolute & %) Bioavailable Testosterone Biological Age (composite) Blood Urea Nitrogen (BUN) BUN : Creatinine Ratio C-Reactive Protein (standard) Cadmium Calcium (ionized) Carbon Dioxide (CO₂) CCP (anti-cyclic citrullinated peptide) Chloride Cholesterol : HDL Ratio Complement C3 & C4 Copper Copper (toxicity context) Cortisol (morning) Creatinine Cystatin C DHEA-Sulfate Direct Bilirubin eGFR (estimated GFR) Eosinophils (absolute & %) Erythrocyte Sedimentation Rate (ESR) Estradiol (sensitive) Estrone Fasting C-Peptide Fasting Glucose Fasting Insulin Ferritin (acute-phase context) FIB-4 Score (calculated) Fibrinogen Folate (serum) Follicle-Stimulating Hormone (FSH) Frailty Index Composite Free Androgen Index Free T3 Free T4 Free Testosterone (calculated) Gastrin GGT (Gamma-Glutamyl Transferase) Globulin Glucose : Insulin Ratio GlycanAge Index Glycemic Variability Composite HDL Cholesterol Hematocrit Hemoglobin Hemoglobin A1c HOMA-IR (calculated) HOMA-β (calculated) Homocysteine hs-CRP (high-sensitivity) IGF-1 (Insulin-like Growth Factor) IGF-1 Longevity Z-Score IGFBP-3 Indirect Bilirubin Inflammation Composite Iron (serum) Iron Saturation % LDL : HDL Ratio LDL Cholesterol (LDL-C) Lead Leptin Lipase Lipoprotein (a) — Lp(a) Luteinizing Hormone (LH) Lymphocytes (absolute & %) MCH · Mean Corpuscular Hemoglobin MCHC · Hemoglobin Concentration MCV · Mean Corpuscular Volume Mercury Metabolic Health Composite Methylmalonic Acid (MMA) Microalbumin / Creatinine Ratio Monocytes (absolute & %) MPV · Mean Platelet Volume Neutrophils (absolute & %) Nickel NLR (Neutrophil : Lymphocyte Ratio) NMR LDL Particle Number NMR Lipoprotein Particle Size NMR Small LDL-P Non-HDL Cholesterol Nucleated RBC Count Omega-3 Index Osmolality (calculated) Pancreatic Elastase Phosphorus Platelet Count Potassium Pregnenolone Progesterone Prolactin Prothrombin Time / INR PSA Free PSA Total RBC Magnesium RDW · RBC Distribution Width Red Blood Cell Count (RBC) Reticulocyte Count Reverse T3 Rheumatoid Factor (RF) Selenium Sex Hormone Binding Globulin (SHBG) Sodium Telomere-Equivalent Estimate Thyroglobulin Antibodies (TgAb) Thyroid Peroxidase Antibodies (TPO) Thyroid-Stimulating Hormone (TSH) Total Bilirubin Total Cholesterol Total Iron Binding Capacity (TIBC) Total Protein Total T3 Total T4 Total Testosterone Triglycerides Triglycerides : HDL Ratio Uric Acid Uric Acid (longevity context) Vitamin A (Retinol) Vitamin B1 (Thiamine) Vitamin B12 Vitamin B6 (P5P) Vitamin D (25-OH) Vitamin E (alpha-tocopherol) Vitamin K (Phylloquinone) VLDL Cholesterol VO₂max Predictor White Blood Cell Count (WBC) Zinc Zinc Protoporphyrin

All 160 in one draw

Measured in The Apex Panel.

The complete view across heart, hormones, metabolism, inflammation, and longevity. Drawn at Quest or LabCorp. Reviewed by a U.S.-licensed physician.

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This information is for general educational purposes only and is not medical advice. Lab results alone are not intended to diagnose, treat, or cure any condition and do not replace the advice of a healthcare provider. OPTML does not offer medical advice, a diagnosis, medical treatment, or any form of medical opinion.

Weight-loss medication disclaimer

OPTML offers compounded semaglutide and tirzepatide, prescribed and overseen by U.S.-licensed physicians. Compounded drug products are not approved or evaluated for safety, effectiveness, or quality by the FDA. OPTML is not associated with, endorsed by, or affiliated with the manufacturers of FDA-approved branded weight-loss medications, and does not sell or supply those branded products. Anyone interested in an FDA-approved branded medication should consult a licensed healthcare provider or pharmacist. Individual results vary; no specific result is promised, and weight management requires ongoing medical guidance.

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