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Schistosoma antigen (serum/plasma) – 24-hour urine collection

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

This test detects the presence of parasite antigens in your urine over a 24-hour period to help diagnose schistosomiasis, a parasitic infection caused by flatworms.

Quick summary

["This test helps diagnose parasitic infections by checking for signs of Schistosoma worms in your urine over a full day’s collection."]

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

Key facts at a glance

LOINC
100140-3
Short code
Schist sp 30-34kD Ab Ser Ql IB
Synonyms
Schist sp 30-34kD 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

Why This Test Is Done

Your healthcare provider may recommend this test if you live in or have traveled to regions where schistosomiasis is common, or if you have symptoms like fever, rash, or digestive issues that could be linked to a parasitic infection. It’s also used to monitor treatment effectiveness in some cases.

What to Expect Before the Test

You’ll collect all your urine for a full 24 hours, starting right after waking up. Store the urine in a refrigerator or cool container, and bring the entire sample to your lab. Follow your provider’s instructions carefully to ensure accurate results.

How the Test Works

The collected urine is analyzed for specific antigens produced by the Schistosoma parasite. This helps confirm whether the infection is active, even if other blood tests are negative.

What the Results Mean

Positive results suggest an active schistosomiasis infection, while negative results mean no detectable parasite antigens were found in your urine during the collection period. Results may vary depending on the stage of infection.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Schistosoma antigen (urine)

Frequently asked questions

What Are Common Symptoms of Schistosomiasis?
Symptoms may include flu-like illness (fever, chills), skin rashes, abdominal pain, diarrhea, or fatigue. Some people have no symptoms at all, especially early in the infection. Early diagnosis and treatment are key to preventing long-term damage.
How Is This Test Different from a Blood Test?
Unlike blood tests that check for antibodies, this urine test looks for direct parasite antigens. It can sometimes detect infection earlier or in cases where antibodies haven’t yet developed.
Can I Take Medications Before the Test?
Ask your provider about any medications you’re taking, especially those affecting urine production or parasite activity. Some medications may interfere with test results, so it’s best to discuss this with your healthcare team.
  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