Skip to content

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

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

This test detects antibodies to the parasite *Schistosoma*, which can cause infections like schistosomiasis. It helps identify past exposure or infection.

Quick summary

["This screening test checks for signs of a parasitic infection that may require further evaluation."]

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

Key facts at a glance

LOINC
100141-1
Short code
Schistosoma sp 65kD Ab Ser Ql IB
Synonyms
Schistosoma sp 65kD 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 looks for antibodies (immune proteins) produced by your body in response to *Schistosoma* parasites. These antibodies appear after infection and can indicate exposure, even if symptoms aren’t yet present. This is a qualitative test, meaning it only provides a yes/no result rather than a precise measurement.

Why It Might Be Ordered

Your healthcare provider may recommend this test if you live in or traveled to regions with high schistosomiasis risk, have symptoms like itching, rash, or gastrointestinal issues, or if you have a history of exposure. It’s also used in screening for people with chronic conditions linked to parasitic infections.

How the Test Works

A small blood sample is taken from your arm. The serum or plasma is tested for antibodies against *Schistosoma* antigens using an immunoassay method. This detects the presence of these antibodies without measuring their exact quantity.

What to Expect Before the Test

No special preparation is needed. You may have mild discomfort from the needle, but this usually fades quickly. If you’re pregnant, have a bleeding disorder, or take blood-thinning medications, let your provider know before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Schistosoma Antibody Screen (qualitative)

Frequently asked questions

What does a positive result mean?
A positive result indicates your body has likely encountered *Schistosoma* parasites, meaning you may have been infected. This could mean you need further testing (like a stool or urine test) or treatment to address the infection. Your provider will guide you on next steps based on your symptoms and risk factors.
Can this test confirm a current infection?
No, this test only detects antibodies, which appear after infection. For active infection confirmation, additional tests (like stool or urine exams for parasite eggs) may be needed. Antibodies can linger for years, so a positive result doesn’t always mean recent infection.
Are there any risks or side effects?
The most common side effect is minor bruising, swelling, or discomfort at the needle site. Rarely, allergic reactions to the blood draw process can occur, but serious complications are uncommon. If you experience severe pain, bleeding, or signs of infection (like fever), contact your provider immediately.
  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