Sperm Motility Evaluation at 6 Hours Post-Ejaculation via Computer-Assisted Sperm Analysis (CASA) from Ejaculate
This test measures how well your sperm move after ejaculation, using a specialized microscope to track sperm motion over six hours.
["Assessing sperm motility supports fertility evaluation and helps identify potential issues affecting sperm function."]
Key facts at a glance
- LOINC
- 21535-0
- Short code
- Sperm Motile 6h p Ejac NFr Smn
- Synonyms
- Sperm Motile 6h p Ejac 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 evaluates sperm motility using computer-assisted sperm analysis (CASA), which tracks individual sperm movement parameters. Key metrics include speed, straight-line velocity, and overall motility percentage. This helps determine whether sperm are moving effectively, which is critical for fertilization.
Why It’s Performed
This evaluation is often part of a fertility assessment, especially when evaluating male infertility. It helps doctors understand sperm quality, including how well sperm can swim through the female reproductive tract to reach an egg.
Sample Collection and Processing
You’ll provide an ejaculate sample in a sterile container. The sample is then processed and analyzed within six hours to assess sperm motility under microscopic examination.
What to Expect Before the Test
No special preparation is needed, but avoid ejaculation for at least 2–3 days before the test. This ensures a fresh sample for accurate results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Low sperm motility can indicate underlying issues such as genetic disorders, hormonal imbalances, or exposure to toxins. It may also suggest problems with sperm production or transport. Results help guide treatment options, such as lifestyle changes, medication, or assisted reproductive technologies.
Frequently asked questions
How long does it take to get results from this test?
Can I take anything to improve sperm motility before this test?
Is this test painful or uncomfortable?
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