The free front door to The Hair Loss Decision Tree.Hair is a lagging indicator. It takes 2 to 4 months to tell you something went wrong, and another 3 to 6 to tell you it's fixed. That's the entire argument for testing before you buy anything: every guess costs you a full feedback cycle.9 pages, in the order that saves you money:1. Triage. Which of the 4 kinds of hair loss you have, because shed, thinning, breakage, and patch aren't related and don't share a panel. Includes the pull test, with the numbers.2. Timeline. What to look for in the 3 to 4 months before it started. The most common answer in my practice is heavier perimenopausal periods draining ferritin over 18 months while the CBC stays normal the entire time.3. The panel. The core tests with a reason attached to every line, written as a list you can hand your doctor. Plus the add-ons your specific pattern earns, so you're not paying for the ones it doesn't.4. Interpretation. Lab range against functional range, which are not the same document. Ferritin above 50, ideally 70, when your report calls 11 normal. Fasting insulin under 7, when your report allows 25.Plus the 6 rules that protect the result before you draw, including why 10 mg of biotin in a hair supplement can hide a thyroid condition for years, and the scarring-alopecia checklist to run before you spend anything on labs at all.There's no supplement protocol in here, on purpose. Supplements are the answer to a question most women haven't asked yet.Brie Wieselman, L.Ac. 27 years in women's hormonal health and functional medicine.Enter your email to download. You'll also get my occasional notes on supporting the body through perimenopause and beyond.Educational content, not a substitute for individual medical care.