Trichuriasis IgG Antibody (Serum/Plasma) – Immunoassay
This test measures antibodies in your blood that your immune system produces in response to infection with *Trichuris trichiura*, a type of intestinal worm (roundworm). Antibodies indicate past or ongoing exposure.
["Detects past or current infection with a common intestinal parasite."]
Key facts at a glance
- LOINC
- 21569-9
- Short code
- T gondii IgG Titr CSF IF
- Synonyms
- T gondii IgG Titr CSF IF
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Ref low
- 8
- Ref high
- 61
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- if
- CPT
- 82977
- SNOMED
- 3110003
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done: This test helps your doctor check for signs of infection, inflammation, or other health conditions that may need treatment. Understanding why the test is recommended can help you make informed decisions about your care and feel more confident about the next steps.
Your healthcare provider may order this test if you have symptoms like abdominal pain, diarrhea, or blood in your stool. It’s also used to confirm a diagnosis in people with suspected *Trichuris* infection, especially in areas where the parasite is common. Rarely, it may be checked after travel to regions with higher risk of soil-transmitted helminth infections.
What to Expect During the Test: During the test, a trained healthcare professional will guide you through each step and explain what is happening. The procedure is usually quick and may cause only mild discomfort. If you feel anxious or have questions at any point, let the staff know so they can help you stay comfortable.
A blood sample is taken from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause discomfort. The test itself is quick and doesn’t require special preparation.
What the Results Mean: Your results will show whether the values fall within the normal range or suggest a possible health issue. Keep in mind that abnormal results do not always mean something serious, and your doctor will explain what the numbers mean for you specifically and whether any follow-up testing is needed.
A positive result means your immune system has detected past or current exposure to *Trichuris*. However, antibodies can stay in your system for years after infection, so a positive test doesn’t always mean you’re actively infected. Results are interpreted by your provider based on your symptoms and clinical context.
Preparation and Safety: Before your test, follow any instructions from your healthcare team, such as fasting or avoiding certain medications. Tell your provider about allergies, current medications, or existing health conditions. These steps help ensure accurate results and keep the procedure as safe as possible for you.
No special preparation is needed. The test is generally safe, but rare risks include bruising, slight pain, or a small swelling at the injection site. If you have bleeding disorders or take blood thinners, let your provider know before the test.
Reference range
Adult males: 8-61 U/L; Adult females: 5-36 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
IgG Antibody to *Trichuris* (Roundworm)
Frequently asked questions
This test helps diagnose or rule out *Trichuris* infection, which can cause intestinal inflammation, malnutrition, or anemia. While less severe than other soil-transmitted helminth infections, untreated infections may lead to long-term digestive issues or complications in children. Early detection and treatment (with prescribed deworming medication) are key to preventing complications.
A positive result suggests your body has been exposed to the parasite at some point, but it doesn’t always mean you’re currently infected. Your provider will assess your symptoms, medical history, and other test results to determine the next steps, such as retesting or treatment for active infection.
Yes, this test is generally safe during pregnancy. However, if you’re pregnant and have symptoms of infection, your provider may recommend additional tests or monitoring to ensure the safety of both you and your baby.
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