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Sperm Count (Total Sperm Number) in Semen

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

This test measures the total number of sperm cells present in a semen sample, which is important for fertility assessment and evaluation of male reproductive health.

Quick summary

["Understanding your sperm count helps determine fertility potential and identify potential reproductive concerns."]

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

Key facts at a glance

LOINC
10588-2
Short code
Spermatogonia # Smn
Synonyms
Spermatogonia # 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 Matters

A sperm count test is typically ordered as part of a fertility evaluation, especially if you or your partner are struggling to conceive. It helps doctors assess whether sperm production is normal or if there may be underlying issues affecting fertility.

What to Expect Before the Test

You’ll need to provide a semen sample, usually collected through masturbation into a sterile container at a clinic or lab. Avoid ejaculation for 2–3 days before testing to get an accurate count. No special preparation is needed beyond this.

How the Test Works

The sample is analyzed under a microscope to count sperm cells. Advanced labs may also examine sperm motility (movement) and morphology (shape) in addition to total count.

Possible Results and Interpretation

Results are not always provided as a single number but often include a range (e.g., normal vs. low counts). A low sperm count may indicate infertility, hormonal imbalances, or other conditions requiring further evaluation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Sperm Count

Frequently asked questions

How long does it take to get results?
Results are usually available within 1–3 business days, depending on the lab. Follow-up with your healthcare provider to discuss findings and next steps.
What causes a low sperm count?
Possible causes include genetic factors, hormonal imbalances, infections, exposure to toxins (e.g., chemicals, heat), or lifestyle choices like smoking or excessive alcohol. A doctor can help identify the root cause through further testing.
Can lifestyle changes improve sperm count?
Yes! Maintaining a healthy weight, avoiding smoking and excessive alcohol, managing stress, and protecting your testicles from heat (e.g., tight clothing) may support sperm health. Some studies also suggest dietary factors like zinc and antioxidants may help.
  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