Every marker that
determines how long
you live.

The most accurate predictor of cardiovascular risk — more precise than LDL alone. Counts every atherogenic particle directly.

A proxy for cardiovascular risk; best interpreted alongside ApoB and particle size for a complete picture.

Reflects carbohydrate metabolism and visceral fat load. Elevated levels are strongly modulated by diet and exercise.

Genetically determined cardiovascular risk factor — largely unaffected by lifestyle. Critical to know, even if hard to modify.

Elevated levels damage arterial walls and raise dementia risk. Often correctable with B-vitamin supplementation.

A clotting protein and acute phase reactant that predicts cardiovascular death independently of cholesterol — and is missing from most standard panels.

The structural protein of HDL and a stronger predictor of cardiovascular protection than HDL-C alone. Pairs with ApoB to give the most predictive lipid ratio available.

The only standard biomarker that directly reflects ongoing cardiac muscle stress — not just risk factors, but what your heart is experiencing right now.

The gut microbiome metabolite that directly links diet and gut bacteria to atherosclerosis. Predicts cardiovascular events independently of all conventional risk factors.

Produced inside atherosclerotic plaques — a direct marker of vascular inflammation that hsCRP cannot capture. Particularly predictive of stroke risk.

The fibrosis biomarker that predicts heart failure, kidney disease, and organ aging. Reflects cumulative fibrotic burden across the heart, kidneys, and liver.

Counts LDL particles directly — not just their cholesterol cargo. Identifies cardiovascular risk in people with normal LDL-C who have high particle numbers and small dense LDL.

The upstream driver of CRP production and a primary mediator of inflammaging. More mechanistically direct than hsCRP — directly impairs insulin signaling and drives endothelial dysfunction.

The gold-standard heart stress biomarker. Elevated NT-proBNP identifies subclinical cardiac dysfunction before symptoms develop — and predicts cardiovascular mortality independently in people with no known heart disease.

A 90-day average of blood sugar. One of the strongest independent predictors of cardiovascular and all-cause mortality.

The earliest signal of metabolic dysfunction — often elevated for years before glucose or HbA1c show any abnormality.

Linked to gout, kidney disease, and cardiovascular risk. Fructose and alcohol are the primary dietary drivers.

The primary measure of kidney function. Declining eGFR is associated with accelerated aging and cardiovascular risk.

One of the most powerful predictors of longevity in population studies. Reflects both nutritional status and liver function.

The two most important liver health markers. Even mildly elevated levels — well within the "normal" range — predict increased mortality risk.

The most sensitive liver enzyme — and a powerful independent predictor of cardiovascular mortality. Even high-normal levels carry elevated risk.

A more accurate kidney function marker than creatinine — unaffected by muscle mass. Predicts cardiovascular death better than creatinine-based eGFR.

The most ordered blood test in medicine — and the most under-interpreted. RDW, NLR, and WBC count each independently predict longevity within normal ranges.

The anti-inflammatory fat cell hormone that falls with visceral fat accumulation — often before glucose or insulin become abnormal. Low adiponectin is an early signal of metabolic dysfunction.

The hunger hormone that reflects fat mass and metabolic health. In excess, it drives leptin resistance, systemic inflammation, and appetite dysregulation. Pairs with adiponectin for the LAR.

Measures pancreatic insulin output directly — without hepatic interference. Distinguishes insulin resistance from beta cell exhaustion. Earlier and more specific than fasting insulin alone.

The most ordered metabolic test — yet its standard reference range is calibrated for disease detection, not longevity. Optimal is 70–85 mg/dL, well below the 'normal' cutoff of 100 mg/dL.

The liver and bone enzyme present in every CMP but rarely explained. Elevated ALP + GGT signals biliary disease; elevated ALP with normal GGT points to bone. Low ALP is increasingly recognized as a longevity concern.

The most tightly regulated mineral — persistent deviation from the midpoint signals parathyroid disease, vitamin D dysfunction, or bone pathology. Calcium above 10.2 mg/dL warrants PTH testing to rule out primary hyperparathyroidism.

Detects kidney glomerular damage years before eGFR declines — and is an independent cardiovascular risk marker even in people without diabetes. The earliest actionable signal in the kidney disease timeline.

The primary calcium and bone metabolism regulator. Chronically elevated PTH silently dissolves bone to maintain normal serum calcium — so calcium can look normal while bone loss is ongoing. Essential context for interpreting calcium and vitamin D.

Present in every metabolic panel yet rarely explained. BUN reflects protein catabolism and kidney clearance simultaneously. The BUN:creatinine ratio separates kidney disease from dehydration, high protein intake, and muscle breakdown.

The gold-standard marker of systemic inflammation. Predicts heart disease risk independently of cholesterol levels.

Measures the anti-inflammatory fatty acid content of red blood cell membranes. Low levels are strongly linked to cardiac death risk.

Critical for muscle mass, bone density, metabolic health, and cognitive function. Declines 1–2% per year after 30 in men.

The biologically active fraction of testosterone. Many men with "normal" total testosterone have suboptimal free testosterone due to elevated SHBG.

The hormone traffic controller that determines how much testosterone is biologically available — and a sensitive early marker of insulin resistance.

Critical for bone density, cardiovascular health, and brain function in both sexes. Low estradiol accelerates aging — in men and women.

Thyroid function governs metabolic rate, energy, body composition, and cognitive sharpness. Subclinical dysfunction is common and underdiagnosed.

The primary mediator of growth hormone's anabolic effects. Both high and low levels carry longevity risk — context is everything.

Chronically elevated cortisol accelerates biological aging, suppresses immunity, and promotes visceral fat accumulation.

One of the most reliable hormonal clocks of aging — declines 2–5% per year from peak. Low levels predict all-cause mortality in prospective studies.

Primary prostate health marker for men. Velocity — rate of rise over time — matters more than any single value. Establish a baseline in your 40s.

The first reproductive hormone to decline in perimenopause — often years before estrogen falls. Low levels drive sleep disruption, anxiety, and cycle changes. Anti-inflammatory and neuroprotective beyond its reproductive role.

The most overlooked hormone in longevity panels. Elevated prolactin silently suppresses testosterone in men and disrupts cycles in women — caused by pituitary microadenomas, medications, or hypothyroidism.

The earliest and most reliable laboratory signal of ovarian aging — often detectable years before cycle changes or estrogen decline. In men, elevated FSH distinguishes primary testicular failure from secondary hypogonadism.

The biologically active thyroid hormones that TSH alone misses. Many people with normal TSH have suboptimal Free T3 due to impaired T4-to-T3 conversion — driven by selenium deficiency, inflammation, or elevated cortisol.

The most potent androgen — 3–10× more powerful than testosterone at the receptor. Primary driver of male pattern hair loss and prostate growth. Essential monitoring marker for men on testosterone therapy, especially topical formulations.

The pituitary's command signal for testosterone production in men and ovulation in women. Combined with FSH, LH instantly localizes whether low testosterone originates in the testes (high LH) or the pituitary (low LH) — a distinction that changes the entire treatment approach.

The metabolic brake — an inactive thyroid hormone that rises under chronic stress, illness, and caloric restriction. The FT3:rT3 ratio captures thyroid conversion efficiency that TSH and FT4 alone miss entirely.

Functions as a hormone, not just a vitamin. Deficiency is linked to cancer, cardiovascular disease, dementia, and all-cause mortality.

The primary iron storage marker. Both deficiency and excess carry distinct risks — the longevity-optimal range is tighter than standard ranges suggest.

Involved in over 300 enzymatic reactions. Deficient in an estimated 50% of adults — affecting sleep, insulin signaling, blood pressure, and energy.

Deficiency can cause irreversible neurological damage before symptoms appear. Widespread risk in vegans, people over 50, and metformin users.

Also listed under Inflammation. A modifiable nutrient-level marker with strong cardiovascular and cognitive protection at optimal levels.

The B vitamin behind DNA methylation, homocysteine clearance, and cancer protection. MTHFR variants make testing particularly important.

Essential for immune function, DNA repair, and testosterone production. Deficiency is common in older adults and is directly linked to accelerated immunosenescence.

Critical for glutathione production, thyroid hormone activation, and cancer protection — with a narrow optimal window where both deficiency and excess cause harm.

The mitochondrial electron carrier essential for cellular energy production. Declines 30–50% with age and is further depleted by statin therapy. Critical for cardiac and muscle function.

The only nutrient where both deficiency and excess accelerate aging. Transferrin saturation identifies pre-anemic iron depletion years before anemia — and screens for hemochromatosis, the most common serious genetic disorder in Northern Europeans.

A nuclear receptor ligand that directly regulates gene expression in immune cells and epithelial barriers. The most toxic fat-soluble vitamin in excess — making testing important for anyone taking preformed retinol supplements long-term.

The calcium traffic director — sends calcium into bones and keeps it out of arteries. The Rotterdam Heart Study found the highest K2 intake was associated with 57% lower aortic calcification. Chronically underconsumed in Western diets.

Required for over 100 enzymatic reactions including serotonin, dopamine, and GABA synthesis. Deficiency is common in women on OCPs and people with chronic inflammation — and directly elevates homocysteine cardiovascular risk.

Essential for iron transport, SOD antioxidant enzyme, and collagen cross-linking. The copper:zinc ratio is an independent predictor of cardiovascular mortality — and high-dose zinc supplementation is the leading cause of copper deficiency in adults.

Required for collagen synthesis, immune function, and antioxidant defense. Subclinical insufficiency is common in smokers and older adults and measurably impairs arterial wall integrity and wound healing.