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Hum Fertil (Camb). 2011 Mar;14(1):48-52. doi: 10.3109/14647273.2010.520798. Epub 2010 Dec 15.

Sperm content of pre-ejaculatory fluid.

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  • 1Obstetrics and Gynaecology, Hull York Medical School, University of Hull, Hull, UK. s.r.killick@hull.ac.uk

Abstract

This study was designed to establish whether motile spermatozoa are released with pre-ejaculatory fluid and whether this fluid therefore poses a risk for unintended pregnancy. Forty samples of pre-ejaculatory fluid were examined from 27 volunteer men. Samples were obtained by masturbation and by touching the end of the penis with a Petri dish prior to ejaculation. Eleven of the 27 subjects (41%) produced pre-ejaculatory samples that contained spermatozoa and in 10 of these cases (37%), a reasonable proportion of the sperm was motile. The volunteers produced on up to five separate occasions and sperms were found in either all or none of their pre-ejaculatory samples. Hence, condoms should continue to be used from the first moment of genital contact, although it may be that some men, less likely to leak spermatozoa in their pre-ejaculatory fluid, are able to practice coitus interruptus more successfully than others.

PMID:
21155689
[PubMed - indexed for MEDLINE]
PMCID:
PMC3564677
Free PMC Article
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