Understanding Your Semen Analysis Results
Key Definitions and Normal WHO Reference Ranges
Sperm Count, Volume & Concentration
- Sperm Count: The total number of sperm in your sample. A healthy total sperm count is typically 39 million or more.
- Sperm Concentration: The number of sperm per millilitre (mL) of semen. A healthy concentration is considered to be 15 million or more per mL.
- Semen Volume: The total amount of fluid you ejaculate. A healthy volume is categorised as 1.5 mL or more.
Sperm Motility
The sperm motility measures how well your sperm are moving. Your report will show two different results:
- Total Sperm Motility: The total percentage of sperm that are moving. A healthy value is considered to be 42% or more.
- Progressive Motility: The percentage of sperm that are moving in a forward, effective path. A healthy proportion is 30% or more.
Sperm Morphology
Sperm morphology is related to the shape and size of your sperm, including the head, neck, and tail. Having 4% or more of your sperm in a healthy shape and size is considered normal.
pH
The pH level measures the acidity or alkalinity of your semen. This is important because the environment needs to be suitable for sperm survival and activity. A pH value of 7.2 or higher is considered healthy.
Macroscopic Measurements
- Appearance: The normal colour and opacity of the semen. Healthy semen has a macroscopically homogeneous, grey-opalescent appearance.
- Liquefaction Complete?: After ejaculation, semen breaks down to allow sperm to move. This process typically occurs spontaneously within a set time. In healthy semen, it is completed at 37°C within 60 minutes.
- Viscosity: The thickness or stickiness of the liquefied semen, measured by drawing it into a pipette and observing how it drips. In healthy semen, the column of fluid dripping from the pipette should be less than 2 cm (or flow freely).

