Worm-specific antigen detection (stool) by immunoassay
This test checks for the presence of parasitic worm antigens in your stool, helping identify infections caused by worms like pinworms, roundworms, or tapeworms.
["Detects worm infections through stool samples using an immunoassay method."]
Key facts at a glance
- LOINC
- 90300-5
- Short code
- Worm Spec NAA+probe
- Synonyms
- Worm Spec NAA+probe
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- 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 detects specific proteins (antigens) produced by certain parasitic worms in your stool. These antigens are unique to worms like *Ascaris*, *Enterobius*, or *Taenia*, which can cause infections. The immunoassay method uses antibodies to identify these antigens, providing a quick and sensitive way to detect active infection.
How the Test Works
A small stool sample is collected and analyzed using an immunoassay technique. This method involves exposing the sample to antibodies that bind to worm-specific antigens, allowing the lab to determine if the infection is present.
Why It Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like abdominal pain, diarrhea, weight loss, or itching (especially in the anal area), or if you live in an area with high worm infection rates. It’s also used for diagnosing suspected parasitic infections in children or travelers returning from regions with endemic worm diseases.
What to Expect Before the Test
No special preparation is needed, but you may be asked to collect a fresh stool sample (usually in a container provided). If you’re taking certain medications (like antibiotics), inform your provider, as they might affect results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Worm antigen stool test
Frequently asked questions
This test helps confirm a parasitic worm infection by detecting antigens in stool, which can guide treatment decisions. Unlike stool cultures, it doesn’t identify the worm species but confirms active infection, allowing for targeted therapy to eliminate the parasite and relieve symptoms.
What does a positive result mean?
What does a negative result mean?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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