What is the normal range for sperm DNA fragmentation?
My wife and I have been trying to conceive for over a year, and my recent reports showed some concerns regarding sperm quality. I've heard about DNA fragmentation tests, but I'm confused about what numbers are actually considered 'normal' or healthy for a successful pregnancy? ~ Murugan Murthy, 38 Yrs
A sperm DNA fragmentation index (DFI) of 15% or less is considered normal. DFI values between 15% and 30% are regarded as moderate or average, while values above 30% are considered high and may significantly impact fertility. It is advisable to consult a fertility expert for interpretation and next steps. Starting a ninety-day cycle of targeted antioxidants can often improve your sperm quality by protecting the genetic material from the daily stress that leads to fragmentation.
Medically Reviewed
By Ferty9 Medical Board, at Ferty9 Fertility Center | Last Reviewed: Apr 5, 2026
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