Determination of serum zinc concentration in male patients with infertility and evaluation of the relationship between serum zinc level and the level of the hormone testosterone in male infertility patients. Materials and Methods: The research was done on 514 serum samples of male infertility patients, 22- 44 years old. The control group consisted of 425 serum samples of healthy people. The method used is descriptive cross-sectional, which compared with the control group. Conclusions: 1) The serum zinc concentration in male patients with infertility was 0.71 + or - 0.49 mg/l, lower than the serum zinc level in the control group (1.10 + or - 0.40 mg/l) with p 0.001. 2) There was no correlation between the levels of serum zinc and serum testosterone in each group (controlgroup: r
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