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Sperm Semen Analysis (Washed Sperm Analysis)

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

This test evaluates sperm quality after washing to assess motility, morphology, and concentration in a semen sample, often used in fertility evaluations.

Quick summary

["Washing sperm helps isolate healthy cells for clearer fertility assessment results."]

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

Key facts at a glance

LOINC
38544-3
Short code
Sperm Pre Wash # Smn
Synonyms
Sperm Pre Wash # 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 Is Done

Doctors may recommend a washed sperm analysis if you’re experiencing difficulty conceiving. It helps determine if sperm quality—such as movement, shape, or count—is affecting fertility. This test is particularly useful when other semen tests show mixed or unclear results.

What to Expect Before the Test

You’ll provide a semen sample (usually collected by masturbation) into a sterile container. The sample is then processed in the lab to remove excess fluids, leaving behind concentrated sperm for closer examination.

What the Test Measures

The test assesses three main aspects: **motility** (how well sperm move), **morphology** (shape and structure), and **concentration** (number of sperm present). These factors can indicate whether sperm are healthy enough for fertilization.

How Results Are Interpreted

Results are compared to standard guidelines, though exact ranges vary by lab. Low motility, abnormal shapes, or reduced sperm count may suggest fertility challenges that could be addressed with further testing or treatment options.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Washed Sperm Test

Frequently asked questions

What does a washed sperm analysis tell you about fertility?
This test helps identify whether sperm quality is a contributing factor to infertility. Unlike a standard semen analysis, washing removes non-sperm cells, providing a clearer picture of sperm health for more precise diagnosis.
How does washing sperm improve accuracy?
Washing removes fluids that can dilute sperm and mask abnormalities, such as immotile or poorly formed sperm. This process isolates sperm for a more focused evaluation of their functional and structural integrity.
Can this test replace a standard semen analysis?
No, but it complements it. A washed sperm analysis is often used when initial results are inconclusive or when specific concerns (like motility issues) need further investigation.
  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