Type your numbers in. Get an honest read — clinical reference range vs. functional/optimal target — for the markers people actually look at: thyroid, metabolic, lipids, liver, sex hormones, inflammation, iron, vitamin D.
Reference ranges below assume adult, non-pregnant, US labs. Units chosen to match LabCorp/Quest defaults.
Clinical reference ranges are the middle 95% of whoever happened to walk into the lab. That includes plenty of people who are insulin resistant, vitamin-D deficient, and inflamed. The "optimal" column is what longevity-leaning clinicians actually aim for — not what the lab report flags.
HbA1c, ferritin, and free testosterone can all swing 10–15% week to week. Two readings 3–6 months apart, drawn fasted and at consistent times, beat one reading at any precision. Trend > single point.
A free T3 at the low end with normal energy, sleep, and body temperature is not the same finding as the same number in someone exhausted and cold. Symptoms anchor the read. Numbers without symptoms are a starting point, not a diagnosis.
This tool compares numbers to reference ranges. It does not diagnose anything. Abnormal labs deserve a real conversation with a clinician, not a webpage. If anything flags red, that is a reason to book an appointment — not a reason to panic, and not a reason to self-treat.