Sperm Head Morphology Analysis (Quantitative)
This test evaluates the shape and integrity of sperm cells' heads, which is important for fertility and potential genetic health. It helps identify abnormalities that may affect sperm function or pregnancy success.
["Assessing sperm head shape can help diagnose fertility issues or genetic concerns."]
Key facts at a glance
- LOINC
- 38674-8
- Short code
- Sperm Head IgA NFr Spec IBT
- Synonyms
- Sperm Head IgA NFr Spec IBT
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- immunobead
- CPT
- 82784
- 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 Matters for Fertility
Sperm head shape is critical because it influences how sperm penetrate the egg. Abnormal heads may prevent fertilization or lead to chromosomal issues in offspring. This test is often part of a broader fertility evaluation, especially when sperm count or motility is normal but conception remains difficult.
How the Test Works
Sperm is collected and examined under a microscope. A specialized technique (often staining) highlights structural details of the sperm heads. The test quantifies the percentage of normally shaped heads versus those with defects (e.g., irregular contours, missing pieces).
What to Expect Before the Test
No special preparation is needed, but you may be asked to abstain from ejaculation for 2–5 days before the test to ensure a higher concentration of sperm. Wear comfortable clothing and bring any medications or medical devices you use daily.
Common Findings and Their Implications
Results may show high percentages of normal heads (typically >14% for clinical significance), or they may reveal elevated levels of abnormal shapes (e.g., 50%+ defective heads). High abnormality rates may indicate underlying issues like genetic disorders, infections, or exposure to toxins.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is often recommended as part of a fertility workup for men with unexplained infertility, recurrent miscarriages, or when partners experience difficulty conceiving despite normal sperm count or motility. It may also be used in genetic counseling or research settings to assess hereditary conditions.
Short name
Sperm Head Shape Test
Frequently asked questions
What does a ‘normal’ result mean for my fertility chances?
Can lifestyle changes improve sperm head shape?
Is this test painful or invasive?
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