Sperm Progressive Motility 2 Hours Post-Ejaculation (Percent of Sperm)
This test measures the percentage of sperm that are moving forward (progressively) about two hours after a semen sample is collected. It is one part of a semen analysis used to assess male fertility.
["Progressive motility two hours after collection helps show how well sperm can travel, which matters for reaching and fertilizing an egg."]
Key facts at a glance
- LOINC
- 57444-2
- Short code
- Sperm Prog 2 p conc NFr Smn
- Synonyms
- Sperm Prog 2 p conc NFr Smn
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test looks at a semen sample and counts how many sperm are moving in a forward, purposeful direction rather than just twitching in place. The result is reported as a percentage of the sperm seen. The "2 hours" refers to the time after the sample was collected when the movement was checked.
Why Timing Matters
Sperm need to swim through the female reproductive tract to reach an egg. Checking motility shortly after collection, and again later, gives your care team a picture of how well the sperm maintain their movement over time. Progressive motility is generally considered the most important type of movement for fertility.
How the Sample Is Collected
A semen sample is usually produced at the clinic or laboratory after a recommended period of abstinence (often a few days, as directed by your provider). The sample is kept at body or room temperature and examined under a microscope at set time points. Follow your provider's instructions on abstinence and collection carefully, because these can affect results.
What the Results Mean
Results are reported as a percentage of progressively motile sperm. Your provider interprets this number alongside other semen analysis results, such as sperm count, total motility, and shape (morphology). A single result is not a diagnosis; values can vary between samples and with recent illness, heat exposure, or time since last ejaculation. Ask your provider to explain your specific numbers.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Progressive motility is a key part of semen analysis and helps evaluate male fertility. Reduced progressive motility can be seen in many conditions, including varicocele, infections, hormonal issues, and lifestyle or environmental exposures, but it can also occur without a clear cause. Results should always be interpreted by a clinician in the context of the full semen analysis, your history, and any repeat testing.
Frequently asked questions
Does a low progressive motility result mean I cannot father a child?
Why is motility checked at two hours after collection?
Can I do anything to improve my sperm motility?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy