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Dot diagram shows the serum FSH data and the cut-off point for sperm retrieval. Dot diagram shows the serum follicle-stimulating hormone data and the cut-off point for sperm retrieval. The best cut-off point for failed sperm retrieval in non-obstructive azoospermic patients is 19.4 mIU/mL. However, a value of FSH lower than 19.4 mIU/mL does not predict normal spermatogenesis and successful sperm retrieval.
