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Schistosoma antigen (serum/plasma) – Parasite-specific antibody detection

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

This test measures antibodies to the parasite *Schistosoma*, which causes schistosomiasis—a disease spread through freshwater contact with infected snails. It helps diagnose infection after exposure.

Quick summary

["Detects antibodies linked to *Schistosoma* infection, aiding diagnosis after potential exposure."]

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

Key facts at a glance

LOINC
100145-2
Short code
Schistosoma sp 110kD Ab Ser Ql IB
Synonyms
Schistosoma sp 110kD Ab Ser Ql IB
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ib
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

What This Test Measures

The test identifies antibodies produced by your immune system in response to *Schistosoma* parasites. These antibodies are specific to the parasite’s proteins and appear in your blood after infection. The presence of these antibodies suggests past or current exposure to the parasite.

How the Test Works

Your blood sample is analyzed using an immunoassay (a lab test that detects specific proteins). The test detects antibodies against *Schistosoma* antigens, which are unique to the parasite. This helps confirm whether you’ve been exposed to the parasite’s eggs or proteins.

When You Might Need This Test

Your healthcare provider may recommend this test if you’ve had contact with freshwater in regions where *Schistosoma* is common (e.g., Africa, South America, Asia) or if you have symptoms like skin rashes, itching, or flu-like illness after exposure.

Common Symptoms of Schistosomiasis

Symptoms may appear weeks to months after infection. Early signs include itching, skin rashes, or flu-like symptoms (fatigue, fever, muscle aches). Later stages may cause abdominal pain, diarrhea, or urinary issues. This test helps rule out infection even if symptoms aren’t present.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test is critical for diagnosing *Schistosoma* infection, especially in areas with limited access to other diagnostic tools. Early detection helps guide treatment and prevents complications like liver or bladder damage. It’s also useful for travelers, military personnel, or individuals with occupational exposure to freshwater.

Short name

Schistosoma antibody (serum/plasma)

Frequently asked questions

Why was I asked to take this test?
Your doctor may have recommended it based on your travel history, occupational risk (e.g., farming, construction), or symptoms like skin irritation, fatigue, or urinary issues after freshwater exposure. It helps determine if you’ve been exposed to the parasite that causes schistosomiasis.
What does a positive result mean?
A positive result indicates your immune system has recognized *Schistosoma* antigens, suggesting past or current infection. However, it doesn’t always confirm active disease—your doctor will consider symptoms, travel history, and other factors to guide next steps.
Do I need to do anything special before the test?
No special preparation is needed. You may drink water as usual, but avoid alcohol or certain medications (like blood thinners) if your doctor has instructed otherwise. Bring any medications you’re currently taking to your appointment.
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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