Primary Sperm Count (Semen Analysis)
This test measures the number of sperm cells in a semen sample to help assess fertility and identify potential issues with sperm production or motility.
["A sperm count test helps determine if sperm production or function may be affecting your ability to conceive."]
Key facts at a glance
- LOINC
- 10591-6
- Short code
- Primary Spermatocytes # Smn
- Synonyms
- Primary Spermatocytes # 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
Why This Test Is Done
Your healthcare provider may recommend a sperm count test if you or your partner are struggling to conceive. It can also be part of a broader evaluation for unexplained infertility or conditions like low testosterone or genetic disorders that may affect sperm production.
What to Expect Before the Test
You’ll need to provide a semen sample, typically collected through masturbation into a sterile container. Avoid ejaculation for at least 2–3 days before testing to ensure an accurate count. Wear a condom if you’re sexually active during this period to prevent contamination.
What Happens During the Test
The sample is analyzed under a microscope to count viable sperm cells. The test may also assess sperm shape, movement, and overall quality, though the primary focus here is on quantity.
What the Results Mean
Results are reported as the number of sperm per milliliter of semen. While specific reference ranges vary by lab, lower-than-expected counts may indicate infertility or underlying health concerns that need further evaluation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A sperm count below the standard threshold (often considered <15 million/mL) can reduce fertility chances, but other factors like motility, morphology, or volume also play a role. Low counts may signal conditions like varicocele, hormonal imbalances, or chronic illnesses. This test is foundational in diagnosing male infertility and guiding treatment options like assisted reproductive technologies or medical interventions.
Short name
Sperm Count Test
Frequently asked questions
How long does it take to get results from a sperm count test?
Can lifestyle changes affect sperm count test results?
Is a sperm count 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