The plasma level of testosterone, FSH and LH were determined simultaneously in spermatic and cubital veins in 12 patients with varicocele. The testosterone levels in spermatic veins were 13.4 +/- 5.3 times higher than in cubital veins. FSH and LH levels were higher in cubital than in spermatic vein. No correlation was found between the number of spermatozoa in 1 ml of semen, and the level of the three hormones studied, either in the cubital or in spermatic vein.
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