Sperm Morphology

Sperm morphology refers to the size and shape of sperm. Sperm morphology is measured during a semen analysis, which is typically performed on men undergoing fertility testing. All men produce some degree of abnormal sperm, it is the ratio of abnormal to normal sperm that has the potential to impact fertility.

At least 4% of sperm should have normal morphology. This means that having at least 4% of sperm with a normal morphology is less likely to impact fertility.