Free tool
Know what to test, and what your numbers should be
Most people never get the right tests, and when they do, the results are hard to read. Enter your age and sex to get the longevity markers worth asking for, your standard vs optimal targets in plain English, and a ready-to-send letter for your doctor.
Sex is used because some healthy ranges (VO2max, body fat, grip) genuinely differ. Nothing is stored.
Your targets
Optimal Standard "normal" Out of range
Bloodwork to ask for
Fitness & body composition
These are general references, not targets for everyone. The right number depends on your age, sex, history and risk, and the optimal goals are more aggressive and still debated. Fitness and body-fat figures are approximate and vary by source. This tool is information only, not medical advice. Always interpret results with a qualified professional.