Reference ranges and watch thresholds for the bloodwork markers hard-training athletes actually track — each page pulled from the same sex-aware data the app itself uses.
Hematocrit is the percentage of your total blood volume made up of red blood cells. It rises with training adaptation, altitude, dehydration, and anything that boosts red cell production.
Read guide →Hemoglobin is the oxygen-carrying protein inside red blood cells, and it moves in the same direction as hematocrit for the same reasons — the other half of the same picture.
Read guide →Red blood cell (RBC) count is the raw number of oxygen-carrying cells per microliter of blood — the upstream number that hematocrit and hemoglobin are both derived from.
Read guide →HDL is the cholesterol particle that carries excess cholesterol back to the liver for clearance — often called the protective lipid because a low reading correlates with cardiovascular risk.
Read guide →LDL is the cholesterol particle most directly linked to arterial plaque buildup, and the number most cardiovascular guidelines target first.
Read guide →Total cholesterol is the sum of LDL, HDL, and a fraction of triglycerides — a single headline number that hides which direction the underlying particles are actually moving.
Read guide →Triglycerides are the storage form of dietary fat circulating in your blood — the lipid marker most sensitive to what you ate in the days before the draw.
Read guide →ApoB counts the actual number of atherogenic lipid particles in your blood — including LDL, VLDL, and Lp(a) carriers — and many cardiologists treat it as a more accurate cardiovascular risk marker than LDL alone.
Read guide →ALT is a liver enzyme that leaks into the bloodstream when liver cells are under stress — one of the two primary liver-function markers on a standard panel.
Read guide →AST is the second core liver enzyme on a standard panel, though it's also released by damaged muscle tissue — which matters for anyone training hard.
Read guide →Creatinine is a muscle-metabolism byproduct filtered by the kidneys, and the number used — alongside age and sex — to estimate eGFR.
Read guide →eGFR (estimated glomerular filtration rate) estimates how well your kidneys filter blood, calculated from your creatinine, age, and sex — it's the number that actually reflects kidney function, not creatinine alone.
Read guide →Uric acid is a waste product of purine metabolism, and the marker most associated with gout risk when it runs high over time.
Read guide →Fasting glucose measures your blood sugar after roughly 8–12 hours without food — the simplest window into how your body is handling carbohydrate intake.
Read guide →HbA1c reflects your average blood glucose over roughly the past 2–3 months, giving a longer-range view than a single fasting glucose draw.
Read guide →Ferritin is your body's iron-storage protein, and the standard first marker used to assess iron reserves — both high and low readings matter.
Read guide →Want to see where your own panel lands? Get your first read →