Blood Test Checker
Enter your value, get an instant answer. 77 biomarkers with standard and longevity-optimal ranges.
Lipids & Heart Health
Cholesterol, triglycerides, and cardiovascular risk markers
LDL
LDL (low-density lipoprotein) carries cholesterol to your arteries.
ApoB
ApoB measures the total number of atherogenic (artery-clogging) particles in your blood.
Total Cholesterol
Total cholesterol is a legacy aggregate metric — the sum of LDL, HDL, and VLDL cholesterol, typically estimated via the Friedewald equation (Total = LDL + HDL + Triglycerides/5).
HDL
HDL (high-density lipoprotein) participates in reverse cholesterol transport — moving cholesterol from arterial walls back to the liver for excretion.
Triglycerides
Triglycerides are the most common type of fat in your blood.
Lp(a)
Lp(a) is a predominantly genetic lipoprotein particle — approximately 90% determined by the LPA gene — that is structurally similar to LDL but carries an additional apolipoprotein(a) chain.
Non-HDL
Non-HDL cholesterol is calculated as Total Cholesterol minus HDL.
VLDL
VLDL (very low-density lipoprotein) is a triglyceride-rich particle produced by the liver.
Metabolic Health
Blood sugar, insulin resistance, and metabolic function
HbA1c
HbA1c measures your average blood sugar over the past 2-3 months by reflecting the percentage of hemoglobin with glucose attached.
Glucose
Fasting glucose measures blood sugar after 8+ hours of fasting.
Insulin
Fasting insulin is one of the earliest markers of metabolic dysfunction.
Uric Acid
Uric acid is a waste product from purine metabolism.
HOMA-IR
HOMA-IR (Homeostatic Model Assessment of Insulin Resistance) is the gold standard calculator for insulin resistance.
C-Peptide
C-peptide provides a direct window into endogenous insulin production.
Thyroid Function
Thyroid hormones and autoimmune markers
TSH
TSH controls thyroid hormone production.
Free T4
Free T4 (thyroxine) is the inactive thyroid hormone that converts to T3 (the active form) in tissues.
Free T3
Free T3 is the biologically active thyroid hormone — the body must convert the inactive T4 into T3 in the liver and gut (peripheral conversion) via selenium-dependent deiodinase enzymes.
Anti-TPO
Anti-TPO antibodies target thyroid peroxidase, the enzyme responsible for thyroid hormone synthesis.
Anti-Tg
Anti-thyroglobulin antibodies target thyroglobulin, the protein used by the thyroid gland to produce T3 and T4 hormones.
Hormones
Reproductive, stress, and growth hormones
Testosterone
Testosterone is the primary male sex hormone, critical for muscle mass, bone density, mood, and energy.
Cortisol
Cortisol is the primary stress hormone produced by the adrenal glands, following a diurnal pattern — highest in the morning (6-8 AM) and lowest at midnight.
Estradiol
Estradiol is the primary estrogen hormone, essential for bone density, cardiovascular protection, brain function, and reproductive health.
DHEA-S
DHEA-S is the most abundant steroid hormone in the body, produced primarily by the adrenal glands.
SHBG
SHBG is a liver-produced glycoprotein that traps free hormones (testosterone, estradiol), making them bio-unavailable.
IGF-1
IGF-1 is the primary mediator of growth hormone (GH) effects and reflects overall GH status.
PSA
PSA is a protein produced by both normal and malignant prostate cells.
FSH
FSH is produced by the pituitary gland and stimulates ovarian follicle development in women and sperm production in men.
LH
LH is produced by the pituitary gland and triggers ovulation in women and stimulates testosterone production in men.
Progesterone
Progesterone is primarily produced by the ovarian corpus luteum after ovulation and by the placenta during pregnancy.
Prolactin
Prolactin is produced by the anterior pituitary gland and is best known for stimulating milk production.
Free T
Free testosterone is the unbound, biologically active fraction — only 2-3% of total testosterone circulates freely.
Liver Function
Enzymes, proteins, and liver health
AST
AST is a liver enzyme also found in the heart, muscles, and kidneys.
ALT
ALT is the most liver-specific enzyme.
Albumin
Albumin is the most abundant protein in your blood, made by the liver.
GGT
GGT is primarily a marker of cellular oxidative stress and glutathione depletion.
Bilirubin
Total bilirubin is the breakdown product of heme from red blood cell recycling.
ALP
ALP is an enzyme with dual sources: liver and bone.
Total Protein
Total protein measures the combined amount of albumin and globulin in your blood.
Globulin
Globulins are a group of proteins in the blood that include immunoglobulins (antibodies), complement factors, and transport proteins.
Direct Bili
Direct (conjugated) bilirubin has been processed by the liver for excretion into bile.
Kidney Function
Filtration, waste clearance, and kidney health
Creatinine
Creatinine is a waste product from muscle metabolism, filtered out by the kidneys.
eGFR
eGFR estimates how well your kidneys filter waste from blood.
BUN
BUN measures the amount of urea nitrogen in your blood, produced when the liver breaks down dietary protein and the kidneys excrete it.
Cystatin C
Cystatin C is a small protein produced at a constant rate by all nucleated cells and filtered exclusively by the kidneys.
Inflammation
Systemic inflammation and immune markers
hs-CRP
High-sensitivity CRP measures systemic inflammation — a central driver of biological aging known as "inflammaging.
Homocysteine
Homocysteine is an amino acid produced during protein metabolism.
ESR
ESR (erythrocyte sedimentation rate) measures how quickly red blood cells settle in a tube over one hour.
Fibrinogen
Fibrinogen is a liver-produced glycoprotein that serves dual roles: it is essential for blood clot formation (converted to fibrin by thrombin) and it is a major acute-phase reactant that rises with inflammation.
Blood Cells
Red cells, white cells, and platelet health
Hemoglobin
Hemoglobin is the protein in red blood cells that carries oxygen throughout your body.
Platelets
Platelets are small blood cells that form clots to stop bleeding.
RBC
RBC count measures the number of red blood cells per microliter of blood.
Hematocrit
Hematocrit is the percentage of blood volume made up of red blood cells.
MCV
MCV measures the average size of your red blood cells in femtoliters (fL).
MCH
MCH measures the average amount of hemoglobin per red blood cell in picograms.
MCHC
MCHC measures the average concentration of hemoglobin within red blood cells.
RDW
RDW measures the variation in red blood cell size (anisocytosis).
MPV
MPV measures the average size of your platelets.
Lymphocytes
Lymphocytes are white blood cells responsible for adaptive immunity, including T cells, B cells, and natural killer (NK) cells.
Neutrophils
Neutrophils are the most abundant white blood cells and the first responders to bacterial infection.
Monocytes
Monocytes are white blood cells that circulate in the blood before migrating into tissues to become macrophages and dendritic cells.
Eosinophils
Eosinophils are white blood cells involved in allergic responses and parasitic defense.
Basophils
Basophils are the rarest circulating white blood cells, normally comprising 0-1% of total WBC.
Vitamins & Minerals
Nutrient status and deficiency markers
Vitamin D
Vitamin D is essential for bone health, immune function, mood regulation, and — emerging research shows — genomic stability and telomere preservation.
Iron
Serum iron measures the amount of iron circulating in your blood.
Ferritin
Ferritin is the best single marker of your body's iron stores.
B12
Vitamin B12 is essential for nerve function, DNA synthesis, and red blood cell production.
Magnesium
Magnesium is a critical mineral involved in over 300 enzymatic reactions: energy production, muscle/nerve function, blood sugar regulation, and blood pressure control.
Folate
Folate (vitamin B9) is essential for DNA synthesis, cell division, and red blood cell production.
Zinc
Zinc is an essential trace mineral involved in immune function, wound healing, protein synthesis, DNA synthesis, and testosterone production.
TIBC
TIBC measures the total capacity of transferrin to bind iron in your blood.
TSAT
Transferrin saturation (TSAT) is the ratio of serum iron to TIBC, expressed as a percentage.
Electrolytes
Essential minerals for nerve, muscle, and fluid balance
Calcium
Serum calcium is tightly regulated by the body — even small deviations can be significant.
Potassium
Potassium is the most abundant intracellular electrolyte.
Sodium
Sodium is the primary extracellular electrolyte, essential for fluid balance, nerve transmission, and muscle contraction.
Chloride
Chloride is the primary extracellular anion, working with sodium to maintain fluid balance and with bicarbonate to maintain acid-base equilibrium.
CO2
CO2 on a blood test actually measures bicarbonate — the body's primary acid-base buffer system that maintains blood pH between 7.
Phosphorus
Phosphorus is the second most abundant mineral in the body, essential for bone formation, energy metabolism (ATP), DNA/RNA synthesis, and cell membrane structure.
Health Calculators
Composite scores that combine multiple biomarkers for deeper risk assessment.
HOMA-IR Calculator
(Fasting Insulin × Fasting Glucose) ÷ 405
HOMA-IR (Homeostatic Model Assessment of Insulin Resistance) estimates how effectively your body uses insulin. It is the simplest validated measure of insulin resistance.
FIB-4 Calculator
(Age × AST) ÷ (Platelets × √ALT)
FIB-4 (Fibrosis-4 Index) is a non-invasive scoring system that estimates the degree of liver fibrosis using four readily available values from standard blood tests.
eGFR Calculator (CKD-EPI)
CKD-EPI 2021: 142 × min(Cr/κ, 1)^α × max(Cr/κ, 1)^-1.200 × 0.9938^Age × (1.012 if female)
eGFR (estimated Glomerular Filtration Rate) measures how well your kidneys filter waste. This calculator uses the race-free CKD-EPI 2021 equation, the current clinical standard that replaced the older race-based formula.
Check all your biomarkers at once
Upload any blood test PDF and get your complete BioMap — a visual map of every biomarker in your panel. Free, instant, no account required.
Upload your labs — Get your BioMapSources: Reference ranges based on AHA/ACC, ADA, AACE, and KDIGO clinical guidelines. Longevity-optimal ranges reflect targets used by preventive and functional medicine practitioners.
Disclaimer: This tool provides general health information and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider about your specific results.