A re-evaluation of daily sperm output of men. Academic Article

abstract

• The daily sperm output (DSO) was reevaluated and urinary loss of sperm was determined. Ejaculates were immediately fixed with glutaraldehyde, stored, and homogenized in a blender to produce a cell suspension. The number of sperm per ejaculate was determined by phase-contrast cytometry. Based on the average number of sperm per ejaculate for the last three of five daily ejaculates, the DSO was 166 +/- 29 X 10(6) sperm for nine men aged 26 to 38 years. Two successive daily ejaculates were sufficient to stabilize extragonadal sperm reserves following accumulation or depletion of epididymal sperm. Sperm were found in urine of three men, and less than 2% of their DSO appeared in the 24-hour urine. Few sperm were voided in the urine of men ejaculating daily; however, the DSO exceeds previous estimates.

authors

• Johnson, Larry

published proceedings

• Fertil Steril

author list (cited authors)

• Johnson, L.

citation count

• 39

complete list of authors

• Johnson, L

publication date

• June 1982

publisher

• Elsevier  Publisher

published in

• Fertility and Sterility  Journal

keywords

• Adult
• Humans
• Male
• Microscopy, Electron
• Reference Values
• Sperm Count
• Spermatozoa
• Urine

PubMed Central ID

• 7084502

Digital Object Identifier (DOI)

• 10.1016/s0015-0282(16)46343-0

start page

• 811

end page

• 816

volume

• 37

issue

• 6

URL

• http://dx.doi.org/10.1016/s0015-0282(16)46343-0