Evaluation of male fertility is done due by checking the semen in the lab.
In our andrology lab the embryologist does the semen analysis. It is done to check the no of sperms, the motility of sperms, presence of abnormal sperms and several other parameters.
Structure of a Normal Sperm
|B||Oligozoospermia||Sperm concentration Less than 20 million/mL|
|D||Teratozoospermia||Less than 30% sperm with normal morphology|
|E||Oligoasthenoteratozoospermia||Disturbance of all three variables|
|F||Azoospermia||No sperm ejaculate|
Common cause of abnormalities:
Artefact :(incorrect collection/examination methodology)
Reddish color: Hemospermia- trauma, inflamation or tumor of the genital tract
Highly viscous semen: Cause is not known (impaired motility)
Liquefation Failure: (impaired motility)-impaired prostate function
Increased Semen volume:Hyperspermia-more than10ml may cause dilutional oligozoospermia
Absence sperms in the ejaculate
Abnormal sperms Microscopic view
Structure of Abnormal Sperm
Oligozoospermia (Reduced Count):
If less than 20 million / ml-oligozoospermia (repeat semen analysis after 3 months: 74 days for process of spermatogenesis and 12 / 20 days for travel)
Azoospermia( Absence of Sperm):
No spermatozoa in the fresh or centrifuged resuspended semen sample
Polyzoospermia (Increased sperm):
If more than 350 million/ml
Sperm motility (Reduced movement):
If less than 50% progressively motile asthenozoospermia (EM-sperm tail defect).
Presence of more than 70% abnormal sperm morphology in the sample.
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