Part I45 minutes
The HPG Axis, Androgen Physiology, and What 'Low T' Actually Means
- Describe the regulation of testosterone production by the HPG axis, including GnRH pulsatility, LH and FSH signaling, and negative feedback.
- Explain why testosterone is measured in the early morning and why a single value is insufficient for diagnosis.
- Explain how SHBG and albumin binding determine free and bioavailable testosterone, and identify the conditions that shift SHBG.
- Distinguish age-related decline in testosterone from organic hypogonadism requiring treatment.