Sperm Morphology Analysis (Automated Counting)
This test evaluates the shape and structure of sperm cells to assess sperm quality, often used in fertility evaluations.
["Helps determine if sperm count or function may be affecting fertility."]
Key facts at a glance
- LOINC
- 81318-8
- Short code
- Sperm.norm morph Smn Auto
- Synonyms
- Sperm.norm morph Smn Auto
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- automated-count
- 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 morphology refers to the physical characteristics of sperm, such as shape, size, and internal organization. Abnormal sperm may fail to fertilize an egg or move properly, impacting fertility. This test is part of a broader evaluation when fertility issues are suspected, especially in men.
What to Expect Before the Test
You’ll typically provide a semen sample after abstaining from ejaculation for 2–5 days. The sample is analyzed under a microscope to count and classify sperm shapes. Some labs use automated systems to detect abnormalities in sperm structure.
How Results Are Interpreted
Results often report the percentage of sperm with normal morphology (usually a threshold like 14% is used for clinical reference). Lower percentages may indicate underlying issues like genetic disorders or exposure to toxins.
Common Reasons for Testing
This test is often ordered when a couple struggles with infertility, unexplained recurrent pregnancy loss, or when other sperm tests (like count or motility) show concerns. It helps identify whether sperm shape is a contributing factor.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal sperm morphology can signal conditions like genetic mutations, chronic illnesses, or environmental exposures. While not all abnormal sperm cause fertility problems, it may prompt further testing or lifestyle changes to improve outcomes.
Short name
Sperm Morphology Test
Frequently asked questions
What does a 'normal' sperm morphology percentage mean?
Can diet or lifestyle changes improve sperm morphology?
Is this test covered by insurance?
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