Semen Concentration (Total Sperm Count)
This test measures the total number of sperm cells in a semen sample, which can help assess fertility and identify potential issues with sperm production or motility.
["A semen sperm count helps determine if fertility problems may be related to low sperm quantity."]
Key facts at a glance
- LOINC
- 40695-9
- Short code
- Sperm p conc # Smn
- Synonyms
- Sperm p conc # 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 doctor may recommend this test if you or your partner are experiencing difficulty getting pregnant. It can also be part of a broader evaluation for unexplained infertility or conditions affecting sperm production, such as hormonal imbalances or genetic factors.
What to Expect Before the Test
You’ll need to provide a fresh semen sample, typically collected through masturbation in a sterile container. Avoid ejaculation for at least 2–3 days before testing to ensure accurate results. Do not use lubricants that may interfere with the analysis.
How the Test Works
The semen sample is analyzed under a microscope to count the total number of sperm cells present. This count is expressed as the number of sperm per milliliter of semen.
What the Results Mean
Results are compared to standard reference ranges for healthy sperm counts, though individual variations exist. Lower-than-expected counts may indicate fertility challenges, while higher counts are generally not clinically significant unless associated with other symptoms.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Low sperm concentration is a common factor in male infertility. It can be caused by conditions like varicocele, hormonal disorders (e.g., low testosterone), or genetic factors. High sperm concentration alone is rarely a concern unless it’s part of a broader evaluation for other reproductive issues.
Short name
Semen Sperm Count
Frequently asked questions
What causes a low sperm count?
How long does it take to get results?
Can lifestyle changes improve sperm count?
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