When should Testosteron be retested?

Testosterone retesting should be timed based on the clinical question and initial results. For men with suspected hypogonadism, blood draw is ideally done between 8:00 and 10:00 AM after fasting, as levels peak in the morning. If the first value is borderline (e.g., 200–300 ng/dL), a second measurement on a different day is recommended to confirm diagnosis. For women, timing depends on the menstrual cycle; early follicular phase (days 3–7) is typical. During hormone replacement therapy (e.g., testosterone gel), retesting should occur just before the next dose to measure trough levels. Retesting may also be considered after 3–6 months if symptoms like low libido, erectile dysfunction, or fatigue persist. Evidence for these recommendations comes from clinical practice guidelines and expert consensus, not large RCTs. Individual factors matter. Note: MyBody-X offers hormone tests, but interpretation should always be done by a physician, especially when treatment decisions are involved.