Abstract
ObjectiveWe characterize microscopic ferning in pre-ejaculate samples with and without sperm. Study designHealthy, male, withdrawal-experienced participants provided up to three paired pre-ejaculate and ejaculate samples. We centrifuged ejaculate samples to obtain a supernatant without sperm. After sperm analysis, we dried and evaluated pre-ejaculate, ejaculate, and supernatants for microscopic ferning. ResultsOf 57 pre-ejaculate samples (N = 24 men), seven (12.3%) contained sperm, none of which exhibited ferning. Sixty-six percent (33/50) of pre-ejaculate samples without sperm exhibited ferning. Neither ejaculate nor supernatant samples exhibited ferning. ConclusionFerning may distinguish clinical pre-ejaculate with and without sperm. Ferning exhibited 100% specificity for pre-ejaculate without sperm.
Published Version
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