DNA fragmentation Test
Sperm DNA fragmentation refers to breaks or damage within one or both strands of DNA contained in sperm. Sperm DNA is normally tightly packaged within the sperm head along with specialized proteins that help protect and stabilize the genetic material.
DNA damage may occur during sperm production, maturation, storage in the male reproductive tract, or after ejaculation. Multiple factors have been studied in relation to sperm DNA fragmentation, including oxidative stress, varicocele, infection, fever or heat exposure, smoking, alcohol use, environmental pollutants, certain medications, lifestyle factors, and advancing paternal age.
Sperm DNA fragmentation has been studied in relation to male infertility, reduced semen quality, recurrent pregnancy loss, and outcomes in assisted reproductive procedures. However, fertility and treatment outcomes are influenced by multiple biological, clinical, female, male, and embryological factors.
The sperm DNA fragmentation test may be considered in selected situations, including unexplained infertility, recurrent pregnancy loss, repeated assisted reproductive treatment failure, abnormal semen parameters, varicocele-associated infertility, or other male fertility concerns where clinically indicated.
Several laboratory methods are available to assess sperm DNA integrity, including TUNEL assay, COMET assay, Sperm Chromatin Dispersion (SCD) test, and Sperm Chromatin Structure Assay (SCSA). The choice of testing method depends on laboratory protocols, clinical context, and available diagnostic workflows.
The results of sperm DNA fragmentation testing should be interpreted along with semen analysis, clinical history, reproductive history, hormonal evaluation, infection screening, lifestyle factors, and other relevant investigations.
At Krishna IVF, sperm DNA fragmentation assessment is used as part of advanced male infertility evaluation and individualized reproductive medicine treatment planning where clinically appropriate.