To investigate interstitial (Leydig) cell function in male adults.
Chorionic gonadotropin Endo®, 5000 IU vials.
1 vial containing 5000 IU by IM injection.
- Sample (dry or EDTA tube) at 8 a.m. on d0.
- IM injection of 5000 IU hCG.
- Samples (dry or EDTA tubes) at time intervals of 4 hours, 24 hrs (d1), 48 hrs (d2) and 72 hrs (d3) after injection.
After centrifugation, draw off the plasma or serum and store at +4°C.
Usually testosterone and oestradiol, sometimes also delta-4 androstenedione and 17-OH progesterone.