Sperm agglutination refers to sperm clumped together. It is usually measured as a percentage of the total number of sperm in a sample. When sperm agglutinate, they cannot swim properly and cannot fertilize an egg. Therefore, sperm agglutination can cause fertility issues in men.
FertilitySmarts explains Sperm Agglutination
A typical sperm analysis will measure:
The number of sperm
The motility (movement)
The morphology (shape)
The agglutination (sticking together) of sperm
The results of this test will categorize sperm agglutination by the number of sperm cells stuck together in a group, called an agglutinate.
Sperm Agglutination Classification
The grading system is as follows:
Grade 0: no agglutination
Grade 1, Isolated: <10 sperm cells per agglutinate
Grade 2, Moderate: 10–50 sperm cells per agglutinate