The numbers that describe your health
A biomarker is a measurable signal — a lab value or vital sign — that reflects something about your health. Each page explains what a marker means, where the evidence points, and which Foundations, Signal Records, and conditions connect to it.
Lipids & Lipoproteins
- ApoB
Apolipoprotein B
The atherogenic particle-count marker
- LDL-C
LDL Cholesterol
The primary lipid risk target
- HDL-C
HDL Cholesterol
A risk marker — not a treatment target
- Non-HDL-C
Non-HDL Cholesterol
All atherogenic cholesterol in one number
- TG
Triglycerides
A window on metabolic health
- Lp(a)
Lipoprotein(a)
The inherited, once-in-a-lifetime risk marker
- O3I
Omega-3 Index
EPA + DHA as a share of red-cell membranes
Glycemic & Metabolic
Inflammation & Vascular
- hs-CRP
High-Sensitivity CRP
A marker of low-grade inflammation
- EOS
Blood Eosinophil Count
The test that decides who gets a steroid inhaler
- BP
Blood Pressure
The most impactful modifiable vital sign
- Hcy
Homocysteine
A vascular and cognitive risk marker — with a caveat
- CAC
Coronary Artery Calcium
Direct imaging of coronary plaque burden
- FCal
Faecal Calprotectin
The test that separates IBS from IBD
Hormones
- IGF-1
IGF-1
The downstream marker of growth-hormone activity
- T
Testosterone
Total and free — the primary androgen
- E2
Estradiol
The primary estrogen
- TSH
Thyroid-Stimulating Hormone
A pituitary hormone — and the best first test of the thyroid
- FT4
Free T4
The unbound thyroid hormone — read alongside TSH
- SHBG
Sex Hormone-Binding Globulin
Why 'low testosterone' is so often misread
Cortisol
The stress hormone — and why 'adrenal fatigue' isn't a diagnosis