Management of Elevated FSH with Low Sperm Count or Azoospermia

Diagnostic Approach

Complete semen analysis is essential to confirm the diagnosis of oligospermia versus azoospermia, according to the American Academy of Family Physicians 1
For azoospermic patients, endocrine evaluation should include serum testosterone and FSH levels, especially if sperm concentration is less than 10 million/mL, as recommended by the American Academy of Family Physicians and the American Urological Association 1, 2
Physical examination should focus on testicular size, consistency, and presence of varicocele, as suggested by the American Academy of Family Physicians 1

Consider FSH analogue treatment to improve sperm concentration, pregnancy rate, and live birth rate in men with idiopathic infertility, as reported by the American Urological Association 2, 3
Selective estrogen receptor modulators (SERMs) may be considered but have limited benefits compared to assisted reproductive technologies, according to the American Urological Association 3, 4
Avoid testosterone monotherapy as it can further suppress spermatogenesis, as warned by the American Urological Association 3

Genetic testing (karyotype and Y-chromosome microdeletion analysis) is recommended for men with non-obstructive azoospermia, as suggested by the European Association of Urology 5

For patients with confirmed non-obstructive azoospermia, inform them about the limited data supporting pharmacologic manipulation with SERMs, aromatase inhibitors, and gonadotropins prior to surgical intervention, as noted by the American Urological Association 3

Men with maturation arrest on histology can have normal FSH despite severe spermatogenic dysfunction, as reported by the European Association of Urology 6
Supplements and antioxidants have questionable clinical utility in treating male infertility, as stated by the American Urological Association 3

FSH levels are negatively correlated with the number of spermatogonia, meaning higher FSH generally indicates decreased sperm production 7

FSH levels alone cannot definitively predict sperm retrieval success in all cases 7
For men with non-obstructive azoospermia undergoing testicular sperm extraction (TESE), FSH levels do not accurately predict the presence of spermatogenesis in all cases 7
Men with maturation arrest on testicular histology can have normal FSH and testicular volume despite having severe spermatogenic dysfunction 7
A comprehensive semen analysis is essential to determine actual sperm count 7
If confirmed azoospermia, further evaluation including genetic testing may be warranted to determine the underlying cause 8
Testicular sperm extraction techniques may be considered if ejaculated sperm are not found but parenthood is desired 9