Karyotype and Y-chromosome tests
Karyotyping examines chromosome number and structure. Y-chromosome microdeletion testing looks for losses in particular regions involved in sperm production. These tests do not replace one another. Their relevance depends on the type of azoospermia and the clinical findings.
Results can change the surgical plan
Some genetic findings provide important information about the likelihood of retrieving sperm. Complete AZFa or AZFb deletions, for example, are a reason not to offer sperm retrieval surgery. The exact report matters: different microdeletions do not all have the same implications.
CFTR and the reproductive ducts
CFTR assessment may be indicated in particular obstructive conditions, such as congenital absence of the vas deferens. Depending on the findings, partner testing and genetic counselling may be needed. The same genetic panel is not appropriate for every man with azoospermia.
Interpret the report with a specialist
Counselling explains implications for treatment and possible transmission to a child. A normal test does not exclude every genetic cause; an uncertain variant alone is not a definite diagnosis. Review the complete report with urology and genetics specialists.
Frequently asked questions
Does a genetic cause rule out every option?
It depends on the finding. Some results make retrieval surgery inappropriate, while others require a different assessment. There is no single answer for all genetic causes.
Will my partner also need testing?
Sometimes. Certain carrier findings may require counselling and assessment of both partners. The decision depends on the specific result.
Sources
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