Table 1.

Results of investigations before, during and post-gonadotrophin therapy with normal reference values

Test	Normal reference range	Baseline (pre-therapy)		Months while on gonadotrophin (HCG) therapy							Off gonadotrophin therapy
First test	Second test	3	5 a	6	9	12	16	20 a	2	6
Testosterone	10–38 nmol/l	2.6	3.3	15.2	–	25.8	5.1	19.9	18.5	24.7	7.8	5.6
Haemoglobin	130–180 g/l	156	–	155	–	164	–	148	–	143	–	–
Haematocrit	0.40–0.53	0.417	–	0.453	–	0.465	–	0.434	–	0.410	–	–
Prostate-specific antigen	<2.5 μg/l	–	1.0	1.2	–	7.7	1.3	1.6	1.3	–	1.4	0.83
FSH	1–14 U/l	<1.0	2.0	–	–	–	–	–	–	–	–	4.0
LH	1–9 U/l	<1.0	3.0	–	–	–	–	–	–	–	–	5.0
Prolactin	0–500 mU/l	212	208	–	–	–	–	–	–	–	–	–
Alanine transferase	10–60 U/l	–	94	101	–	77	71	74	54	63	55	49
Semen volume	>1.4 ml	3.0	3.5	–	4.0	–	4.8	4	–	–	5.5	–
Semen pH	>7.2	8.0	7.5	–	8.0	–	8.0	8.0	–	–	–	–
Sperm concentration	>12 million/ml	<1.0	<1.0	–	<1.0	–	9.0	22.0	–	–	3	–
Progressive sperm	>31%	NA	NA	–	NA	–	14	40	–	–	23	–
Total motility	>38%	NA	NA	–	NA	–	21	41	–	–	33	–

HCG therapy was stopped at 22 months; ‘–’, indicates test was not done; NA, indicates not available.

^arFSH therapy started 5 months after the commencement of HCG therapy and then was stopped at 20 months.