Table 3.
Sex steroid priming regimens for boys.
| Dose | Route of administration | Timing prior to GHST | |
|---|---|---|---|
| Testosterone depot (Testosterone Enanthate) |
25 mg (47) 50 – 100 mg (58, 68) 100 mg (4, 55) |
Intramuscular | 7-10 days 7 days 5-8 days (55), 7-10 days (4) |
| Sustanon®
(mixture of Testosterone esters: propionate, phenylpropionate, isocaproate, decanoate) |
50-100 mg (69) 62.5 mg/m2 (57, 67) 125 mg/m2 (57, 67) MDT (multiple dose testosterone) 62.5 mg/m2 monthly for 3 doses (67) |
Intramuscular | 3-5 days 7 days 7 days Last injection 7 days before test |
| Testosterone undecanoate | 120 mg daily (13) | Oral | 5 days |
| Testosterone gel 2% | 10 mg daily for 6 months (59, 60) | Transdermal | 3-6 months before test |
| β-oestradiol (oestradiol valerate) | 1 mg < 20 kg 2 mg >20 kg daily (bedtime) (52, 56) |
Oral | For 2 (68) – 3 (52) days |
| Ethinyloestradiol | 10 or 20 or 50 or 100 mcg (69) 20 mcg/m2 daily (bedtime) (61) 40 mcg/m2 daily (8) 50 mcg patch (62) |
Oral Oral Oral Transdermal |
For 3 days For 1-2 days For 2 days 1 patch to be applied and kept on for 3 days |
| Stilboestrol | 5 mg twice a day (63) 1 mg twice a day (64) |
Oral Oral |
For 3 days For 2 days |
| Premarin® (Conjugated oestrogen) | 1.25 daily (61, 65) 2.5 mg (66) |
Oral Oral |
For 3 days 1 dose the evening before and 1 dose the morning of the GHST |