Verbatim response from ChatGPT
“Best” depends on what you want to measure (fertility, cycle hormones, adrenal/cortisol, thyroid, menopause). Below are top at‑home options by use case, with why each is recommended and one important caveat.
-
Precision Analytical — DUTCH Complete (Dried Urine Test)
- Why: Most comprehensive panel for sex steroids, steroid metabolites and a full diurnal cortisol profile (4 time points). Great if you want detailed info on estrogen metabolites and adrenal function.
- Best for: in‑depth hormone/metabolite mapping and functional endocrinology.
- Caveat: More interpretation needed; often used with a practitioner.
-
Modern Fertility (now part of Everlywell/partner network)
- Why: Focuses on fertility markers (AMH, FSH, estradiol) and cycle health with a good user interface and clear fertility‑focused guidance.
- Best for: assessing ovarian reserve and fertility planning.
- Caveat: Less comprehensive for adrenal hormones.
-
LetsGetChecked
- Why: Uses lab‑based blood samples for common female hormone panels (estradiol, progesterone, testosterone, FSH/LH, thyroid options) and includes nurse/clinician support and follow‑up.
- Best for: clinical screening when you want blood‑based results plus access to clinician support.
- Caveat: Some specialized metabolites aren’t included.
-
Everlywell
- Why: Widely available, easy finger‑prick tests for sex hormones and thyroid, clear reports and commonly used for routine screening.
- Best for: affordable, convenient baseline hormone checks.
- Caveat: Not as deep as DUTCH for metabolites or cortisol diurnal profiling.
-
ZRT Laboratory (saliva testing; also partners with clinicians and companies)
- Why: Saliva testing is good for free cortisol diurnal profiles and free sex hormones; ZRT is a respected lab used by many practitioners.
- Best for: evaluating cortisol rhythm and free hormone levels using saliva.
- Caveat: Saliva is not ideal for every hormone (thyroid and some others are better in blood).
Quick tips for choosing
- Decide the goal first: fertility (AMH/FSH), thyroid (TSH/free T4/T3, antibodies), adrenal (cortisol diurnal), or general sex hormones.
- Check the sample type: blood/finger‑prick for many hormones and antibodies; saliva for free cortisol and free sex hormones; dried urine (DUTCH) for metabolites and a broad steroid profile.
- Confirm the lab is CLIA‑certified and that results can be shared with your clinician.
- If results could change treatment, plan to review them with your primary care doctor, OB/GYN or endocrinologist.
If you tell me what specific symptoms or goals you have (fertility, irregular periods, fatigue/stress/adrenal concerns, menopause symptoms, thyroid concerns), I can recommend the single best kit for your situation.