Skip to content

Sperm Morphology Analysis (Quantitative Head Abnormality Index)

Published: August 9, 2026Updated: August 16, 2026

This test evaluates the shape and structure of sperm heads to assess sperm morphology, which is important for fertility and potential in vitro fertilization (IVF).

Quick summary

["Checking sperm head shape helps identify possible fertility issues."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
38555-9
Short code
Sperm.head w IgG NFr Smn IBT
Synonyms
Sperm.head w IgG NFr Smn 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

Proper sperm morphology is crucial for fertilization. Abnormal sperm heads may indicate underlying health conditions or genetic factors that could affect fertility. This test helps healthcare providers determine if additional treatments or interventions may be needed.

How the Test Works

A sample of sperm is collected and examined under a microscope. The test measures the proportion of sperm with normal head shapes compared to those with irregular shapes. This is often done as part of a broader sperm analysis.

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 high-quality sperm sample. Wear comfortable clothing and bring any medications or questions for your healthcare provider.

What to Expect During the Test

You’ll provide a semen sample, which is then analyzed in a lab. The process usually takes about 15–30 minutes, including sample collection and review. Results are typically available within 1–3 business days.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Sperm Head Shape Test

Frequently asked questions

What does a low sperm head abnormality index mean?
A low index suggests that a significant portion of your sperm may have structural issues that could affect fertility. This doesn’t always mean you’re infertile, but it may indicate the need for additional evaluation or treatment options.
How long does it take to get results?
Results are typically ready within 1–3 business days after the lab processes your sample. Your healthcare provider will discuss the findings with you during a follow-up visit.
Can lifestyle changes improve sperm head morphology?
Yes, certain lifestyle changes—such as avoiding smoking, limiting alcohol, maintaining a healthy weight, and reducing exposure to environmental toxins—may support sperm health. Consult your doctor for personalized advice.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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