Verbatim response from ChatGPT
Short answer: there’s no single “best” for every woman — it depends on what you’re trying to learn (fertility, menopause, thyroid, adrenal/cortisol, cycle hormones). Below are the top consumer options by purpose, with why they’re recommended.
If you want a comprehensive view of sex hormones + adrenal/cortisol rhythm
- DUTCH Complete (Precision Analytical) — urine/dried-urine test that measures sex hormones, metabolites, and diurnal cortisol/melatonin patterns. Best when you need detailed steroid metabolism info and a full cortisol profile.
If you’re focused on fertility / ovarian reserve
- Modern Fertility — fingerstick blood test that includes AMH and common reproductive hormones. Designed for fertility planning and easy-to-understand results and guidance.
If you want a convenient clinical-grade blood panel with clinician review
- LetsGetChecked — fingerstick blood tests with broad hormone panels (estrogen, progesterone, FSH, LH, testosterone, prolactin, thyroid options) plus nurse/clinician follow-up. Good balance of convenience, scope, and medical support.
If you prefer at-home saliva or dried-blood-spot for adrenal/cortisol testing or nuanced hormones
- ZRT Laboratory — offers saliva and dried-blood-spot options for cortisol, sex hormones, and progesterone. Often used by clinicians for monitoring bioavailable/free hormone levels and cortisol patterns.
If you mainly want basic thyroid screening
- Everlywell or direct lab testing (Quest/Ulta Lab Tests) — both let you order TSH/Free T4/Free T3 and antibodies without a physician visit. Good for straightforward thyroid evaluation.
Quick notes on choosing and interpreting:
- Choose the test type that fits your goal: blood (serum/fingerstick) for most standard hormones, urine (DUTCH) for metabolites and cortisol rhythm, saliva for free cortisol and some free sex hormones.
- Timing matters: many hormones vary across the cycle (e.g., progesterone around luteal phase, FSH/LH on specific cycle days). Follow the test instructions or ask a clinician when to sample.
- Accuracy: clinical venous blood tests done through a lab (ordered by a clinician or a trusted testing service) remain the gold standard; at‑home fingerstick and dried urine tests are generally reliable but can differ slightly.
- If results are abnormal or you plan treatment, discuss with your healthcare provider/endocrinologist.
If you tell me what specific concern you have (fertility, irregular periods, menopause symptoms, fatigue/stress, thyroid symptoms), I’ll recommend the single best kit for your situation and note timing for sample collection.