What is the normal range of sperm fragmentation rate?

Sperm fragmentation rate is also known as sperm DNA fragmentation rate. The normal range is less than 20%. The lower the sperm fragmentation rate, the better the sperm quality. Conversely, the higher the sperm fragmentation rate, the worse the sperm quality. Therefore, if the sperm fragmentation rate is found to be increased, detailed medical history collection, physical examination, laboratory examination, imaging examination, etc. can be carried out to identify the cause, and corresponding treatment can be given.