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SEMEN COLLECTION AND
ANALYSIS
The analysis
of a man's semen is easy, cheap, not too inconvenient and tells the
doctor immediately the number of sperm present (total count), whether
they move (their motility) and if so how well, and what they look like
(their morphology). Other aspects of the examination include the volume
and consistency of the ejaculate produced, the vitality of sperm (number
actively moving), whether an infection is present in the genital tract
and if antisperm antibodies are suspected. When the results of this
data, along with other pertinent information (such as the period of
abstinence before the sample was collected, the time delay between collection
and delivery to the laboratory, how it was collected, any spillage and
even the “quality of collection”), an assessment of a man's
potential for fertility can be given. Frequently, more than one analysis
is required, since the testes are a very sensitive indicator of general
health and, as sperm are produced over a ten-week period, many factors
can effect their production. Excepting azoospermia (no sperm present)
no one measured parameter of a semen analysis in an individual is indicative
of fertility - it is the assessment of a combination of factors, including
your background health, that enable an overall prognosis to be made.
The following questions may need an answer when you deliver your sample
for analysis. The reasons appear alongside:
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QUESTION
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REASON
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Time of collections
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Changes in sperm may occur with time
of delivery.
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Transport temperature
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Extremes (<15
°
C, >37
°
C) can affect sperm motility and vitality.
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Prior abstinence
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Will effect seminal volume and sperm
numbers.
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Method of collection
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Possible loss or contamination
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Spillage - first
part
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Sperm numbers reduced.
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Spillage - second
part
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Seminal volume reduced.
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Health in previous
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Maturation of sperm takes 72 days.
|
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3 months
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Poor health in this time may be reflected
in semen quality.
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Medications and/or
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A range of compounds are known to
affect the testes (eg smoking tobacco marijuana, alcohol).
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Previous fertility
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The functional integrity of sperm
has been demonstrated if you have fathered a pregnancy.
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Finally, the scientist assumes that what
you deposit into the specimen container for semen analysis represents
what you deliver to your partner at intercourse when all the conditions
should be perfect. Thus, it is important to have a “good”
collection.
This page was last updated on September 17, 2001
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