For reliable hormonal results, we recommend doing your blood test between day 3 and day 8 of your cycle, counting day 1 as the first day of your period. This window applies to the Complete panel (100+ biomarkers); it does not apply to the follow-up panel or to members without sex-hormone markers in their panel. This early window gives the clearest baseline measurements of your hormones (such as FSH, LH, and estradiol). A morning appointment is best where possible. For the urine sample, collect a mid-stream sample (let the first few seconds pass before collecting) to avoid menstrual blood contaminating your sample. Follow the other hygiene instructions carefully for collection.