Sperm Agglutination, Semen (Qualitative)
This test examines a semen sample to see whether sperm stick together in clumps, a finding called agglutination. It is usually part of a broader semen analysis used in fertility evaluation.
["Sperm agglutination testing looks for clumping of sperm in semen, which can sometimes affect sperm movement and fertility."]
Key facts at a glance
- LOINC
- 81138-0
- Short code
- Sperm.aggregated Smn Ql
- Synonyms
- Sperm.aggregated Smn Ql
- 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 a semen sample for agglutination, meaning sperm that adhere to one another and form clumps. Agglutination is distinct from nonspecific clumping caused by debris or cells, and the laboratory may note how much clumping is present.
Why It May Be Ordered
It is typically ordered as part of a semen analysis when a couple is being evaluated for infertility or when a healthcare provider wants to assess sperm quality and behavior. Findings may prompt further testing to look for possible causes.
How the Sample Is Collected
A semen sample is usually collected privately after a period of abstinence recommended by the laboratory. The sample is then delivered to the lab promptly for examination. Follow the collection instructions provided by your clinic, since timing and handling can affect results.
What Results May Mean
The report describes whether agglutination is seen and may describe its degree. Agglutination can be associated with sperm antibodies or other factors, but it does not by itself diagnose a cause of infertility. Your provider will interpret it alongside other semen analysis results and your history.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Sperm agglutination is a descriptive finding on semen analysis rather than a diagnosis. Significant clumping may reduce effective sperm motility and can be seen with antisperm antibodies or other conditions, so results are interpreted together with sperm count, motility, morphology, and clinical context. No specific numeric thresholds are provided here because interpretation varies by laboratory method.
Frequently asked questions
Does sperm agglutination mean I cannot father a child?
Is this the same as sperm antibodies testing?
How should I prepare for the test?
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