When is Testosteron Labor actually useful?

Testosterone lab testing is clinically useful when there is a suspected diagnosis of hypogonadism in men (e.g., low libido, erectile dysfunction, fatigue, loss of muscle mass) or to monitor hormone replacement therapy. It may also be indicated in certain cases of infertility or pituitary disorders. However, routine screening in healthy asymptomatic individuals is not recommended, as levels fluctuate diurnally and vary widely. Interpretation requires a physician who considers total and free testosterone as well as SHBG. The provided knowledge context does not cover testosterone testing; this answer is based on general medical practice, not on the cited sources. Evidence grade: practice (clinical guidelines).