Sperm Head Morphology Analysis (Quantitative)
This test examines the shape and structure of sperm heads to assess potential fertility issues or genetic abnormalities.
["A healthy sperm head shape is crucial for successful fertilization."]
Key facts at a glance
- LOINC
- 10594-0
- Short code
- Sperm Tapering Head NFr Smn
- Synonyms
- Sperm Tapering Head 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
Why This Test Might Be Ordered
Your doctor may recommend this test if you or your partner have trouble getting pregnant, unexplained infertility, or if you’ve been diagnosed with conditions like Klinefelter syndrome or other genetic disorders that affect sperm morphology. It can also be part of a broader evaluation for recurrent miscarriages or unexplained fertility problems.
What to Expect Before the Test
You’ll typically provide a semen sample in a sterile container, often collected through masturbation in a private room. Avoid ejaculation for at least 2–3 days before testing to ensure a representative sample. If you’re using medications or supplements that might affect sperm, discuss them with your healthcare provider.
What the Test Measures
The test evaluates the percentage of sperm with normal head shapes, including factors like size, shape (round, oval, or irregular), and surface integrity. Abnormalities may indicate genetic issues, exposure to toxins, or underlying health conditions.
How Results Are Interpreted
Results are often reported as a percentage of normally shaped sperm (e.g., <14% may suggest subfertility). While not a definitive diagnosis, it can help identify areas for further investigation, such as genetic testing or treatment adjustments.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Sperm Head Shape Evaluation
Frequently asked questions
What does a ‘normal’ sperm head look like?
How long does it take to get results?
Can lifestyle changes improve sperm head morphology?
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