Biomarkers Every Man Over 35 Should Be Tracking

Your annual physical is designed to catch disease. It's not designed to optimize health. There's a significant difference — and the gap between the two is where most men's health problems silently develop for years before becoming crises.

What Standard Labs Miss

A standard annual physical typically includes a basic metabolic panel, CBC, and lipid panel. These are screening tools for disease states — they're designed to catch problems that are already significant. They tell you almost nothing about your trajectory, your hormonal status, your inflammatory burden, or your metabolic efficiency.

By the time standard labs flag a problem, you've often been declining for years. The goal of proactive men's health is to identify and correct dysfunction before it becomes disease.

The Essential Panel for Men Over 35

Hormonal Health

• →Total testosterone
• →Free testosterone
• →SHBG (sex hormone-binding globulin)
• →Estradiol (E2)
• →LH and FSH
• →DHEA-S
• →Prolactin

Total testosterone alone is insufficient. A man can have "normal" total testosterone but severely low free testosterone if SHBG is elevated — meaning most of his testosterone is bound and biologically inactive. Estradiol matters too: elevated estrogen in men causes fatigue, mood changes, and water retention, and is often the result of aromatization from excess body fat.

Thyroid Function

• →TSH
• →Free T3
• →Free T4
• →Reverse T3
• →TPO antibodies
• →Thyroglobulin antibodies

Most physicians only order TSH. This misses subclinical hypothyroidism, Hashimoto's thyroiditis (autoimmune), and conversion problems where T4 isn't converting to the active T3. Symptoms of thyroid dysfunction — fatigue, brain fog, weight gain, cold intolerance — are identical to low testosterone. You need both panels.

Metabolic Health

• →Fasting glucose
• →Fasting insulin
• →HbA1c
• →HOMA-IR (calculated)
• →Advanced lipid panel (LDL particle size, ApoB)
• →Triglycerides
• →HDL

Standard LDL is a poor predictor of cardiovascular risk. ApoB and LDL particle number are far more predictive. Fasting insulin — rarely ordered in standard care — is the earliest marker of insulin resistance, often elevated for years before glucose rises.

Inflammation and Organ Function

• →hsCRP (high-sensitivity C-reactive protein)
• →Homocysteine
• →Ferritin
• →Liver enzymes (AST, ALT, GGT)
• →Kidney function (creatinine, eGFR)
• →CBC with differential

Nutritional Status

• →Vitamin D (25-OH)
• →Vitamin B12
• →Folate
• →Magnesium (RBC, not serum)
• →Zinc
• →Omega-3 index

How to Get These Tests

Most primary care physicians won't order this full panel without significant pushback — it falls outside standard-of-care guidelines, which are designed for population-level disease prevention, not individual optimization. You have several options: find a physician who specializes in men's health and longevity medicine, use a direct-to-consumer lab service, or work with a telehealth provider who takes a proactive approach.

The most important thing is to get a baseline before you feel bad. Tracking trends over time is more valuable than any single data point.