Some facts about sperm count

Sperm count measures how many sperm are in a man’s ejaculate.  Sperm counts have decreased significantly in some areas and held steady in others.  Sperm counts are going down in all industrialised countries due to unknown environmental factors.  Sperm counts were measured using a haemocytometer.  Sperm count and semen volume correlate well within subjects.  Sperm counts are known to vary geographically.  Sperm counts and quality depend on many factors.  Sperm count depression, however, was associated with the duration of exposure in the current year but not with exposure in past years.  Sperm count depression was limited to applicators involved in irrigation setup work and In the calibration of equipment.  Sperm count inversely correlated with the frequencies of diploidy, aneuploidies for chromosomes 13 and 21 in OAT patients.  -  Semen analysisFrom Wikipedia, the free encyclopedia(Redirected from Sperm count)Jump to: navigation, search.  Examples of parameters measured in a semen analysis are: sperm count, motility, morphology, volume, fructose level and pH.  For instance, a man can have a total amount (sperm count) of far over the limit of 20 million sperm cells per milliliter, but still have bad quality, because too few of them are motile.  However, if the sperm count is very high, then a motility of less than 60% might not matter, because the fraction might still be more than 8 million per milliliter.  The other way around, a man can have a sperm count far less than 20 million sperm cells per milliliter and still have good motility, if more than 60% of those observed sperm cells show good forward movement.  Compared to samples obtained from masturbation, semen samples from collection condoms have higher total sperm counts, sperm motility, and percentage of sperm with normal morphology.