Trichinella antibody serologic test (serum/plasma)
This test detects antibodies in your blood that may indicate past or current infection with the parasitic worm *Trichinella*. It helps diagnose trichinellosis, a rare but serious illness caused by eating undercooked meat containing live or dead larvae.
["This test helps doctors check for a parasitic infection that can affect your muscles and other body systems."]
Key facts at a glance
- LOINC
- 26661-9
- Short code
- Trichinella Ab Ser Ql
- Synonyms
- Trichinella Ab Ser Ql
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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 Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like muscle pain, swelling, fever, or fatigue—especially if you’ve recently eaten undercooked meat from high-risk sources. They might also order it if you live in an area with known trichinellosis outbreaks or have traveled to regions where the parasite is common.
What to Expect During the Test
A blood sample will be drawn from a vein in your arm. The sample is sent to a lab for testing. Results are typically available within a few days. If the test is positive, further testing may be needed to confirm the diagnosis.
How the Test Works
The test uses an immunoassay (often a chemiluminescent or fluorescence-based method) to detect antibodies produced by your immune system in response to *Trichinella* infection. These antibodies can appear after the parasite has been in your body for some time.
Preparation Before the Test
No special preparation is needed. You may eat and drink normally before the blood draw. If you’re on blood-thinning medication, let your provider know before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A positive test result suggests exposure to *Trichinella* parasites, which can cause muscle inflammation, weakness, or other systemic symptoms. Early diagnosis is important to manage symptoms and prevent complications. A negative result means no detectable antibodies were found at this time, but infection could still be present if symptoms persist.
Short name
Trichinella Antibody Screening/Confirmation
Frequently asked questions
What Does a Positive Test Mean?
How Soon Will I Get Results?
Can I Prevent Trichinella Infection?
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