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Schistosoma antigen (microscopic detection)

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

This test detects microscopic parasites or their eggs in your body fluids to identify infection with *Schistosoma*, a parasitic worm that can cause chronic health issues.

Quick summary

["Helps diagnose parasitic infections linked to skin rashes, organ damage, or unexplained symptoms."]

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

Key facts at a glance

LOINC
10715-1
Short code
Schistosoma UrnS Micro
Synonyms
Schistosoma UrnS Micro
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
microscopy-light
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What the Test Measures

The test looks for microscopic signs of *Schistosoma* organisms or their eggs in your urine, blood, or stool. It’s not a blood count but a direct microscopic examination of bodily fluids to confirm infection.

How It’s Performed

A healthcare provider collects a urine sample (often early in the morning) or may examine stool, blood, or other fluids under a microscope. No special preparation is needed, but timing (e.g., urine timing for egg shedding) may vary by lab.

When It’s Ordered

Your doctor may recommend this test if you’ve traveled to regions with *Schistosoma* risk, have skin rashes, fever, or organ-related symptoms (e.g., bladder/kidney issues) after exposure.

Limitations

Results may be false negative if taken too early (eggs may not appear in urine/stool yet) or if the infection is mild. Microscopic tests aren’t always available in all labs.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Schistosoma antigen test (microscopic)

Frequently asked questions

What does a positive result mean?
A positive result strongly suggests *Schistosoma* infection. This parasite can cause chronic inflammation, organ damage (e.g., bladder stones, kidney scarring), or skin lesions. Treatment with antiparasitic medication may be needed.
What does a negative result mean?
A negative result means no visible parasites/eggs were found in the sample. However, the test may miss early or mild infections. Follow-up testing or symptoms may guide further evaluation.
How soon can I expect results?
Results are typically available within 1–3 business days, depending on lab processing. Microscopic tests can take longer than automated blood tests.
  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