Advanced Molecular Testing of Sperm and Seminal Plasma
Our laboratory offers advanced molecular testing for male infertility, utilizing molecular genetic techniques such as sperm DNA fragmentation index (DFI) and Y chromosome microdeletion analysis. These comprehensive evaluations provide critical insights into the genetic stability and functional abnormalities of male reproductive cells, supporting infertility specialists in developing more precise and effective treatment strategies tailored to each patient.
Understand Your DNA: Y Chromosome Microdeletion Testing
All men carry one Y chromosome, a genetic blueprint unique to males. In some individuals, small segments of genes on the Y chromosome may be missing, a condition known as a microdeletion. These microdeletions are usually congenital and can significantly reduce sperm count—or even result in complete absence of sperm—leading to male infertility.
Testing is performed using a blood sample, from which DNA is extracted and analyzed. Our focus is on the AZF regions of the Y chromosome, which play a critical role in spermatogenesis. Abnormalities in these regions are strongly associated with oligozoospermia (low sperm count) or azoospermia (no sperm).
- AZFa deletion: Typically results in complete azoospermia.
- AZFb deletion: Also leads to azoospermia, with spermatogenesis arrested at an early stage.
- AZFc deletion: The most common type; some patients may still produce small numbers of sperm, allowing assisted reproductive technologies such as intracytoplasmic sperm injection (ICSI) to be used for achieving pregnancy.
Men with abnormal sperm production, severely reduced sperm count, or azoospermia may also have an increased risk of producing abnormal embryos or generating aneuploid gametes.
Sperm DNA Fragmentation Test
When sperm DNA is broken or fragmented, the genetic information it carries may be transmitted incorrectly or fail to transmit at all, potentially impairing fertilization and embryo development. This test requires only a small semen sample. Using specialized staining techniques and advanced instruments, we calculate the DNA Fragmentation Index (DFI). A normal DFI indicates good sperm DNA integrity and a higher fertilization potential. However, if the DNA fragmentation rate is elevated, it is recommended to consult with your physician about assisted reproductive technologies and subsequent embryo screening.
