Trichomonas vaginalis Antigen Detection (Urine)
This test checks for the presence of *Trichomonas vaginalis*—a microscopic parasite that can cause infections in the genital area. It uses urine to detect its genetic material, helping identify an infection that may not cause obvious symptoms.
["A simple urine test to detect a common but often silent parasite infection."]
Key facts at a glance
- LOINC
- 53357-0
- Short code
- Trichomonas #/area Ur Comp Assist
- Synonyms
- Trichomonas #/area Ur Comp Assist
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- computer-assisted
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why This Test Matters
Trichomonas vaginalis is one of the most common sexually transmitted infections (STIs) worldwide. While some people may not experience symptoms, it can cause irritation, discharge, or discomfort in the genital area. Detecting it early helps prevent complications and reduces transmission risk.
How the Test Works
The test analyzes urine for genetic material (antigen) from *Trichomonas*. If the parasite is present, the test can detect it quickly, often within minutes, using a simple dipstick or lateral flow method.
When You Might Need This Test
Your healthcare provider may recommend this test if you have symptoms like unusual discharge, itching, or burning during urination, or if you’ve had recent sexual contact with someone who tested positive. It’s also used as a screening tool for STI prevention.
What to Expect Before the Test
No special preparation is needed. You’ll provide a urine sample in the privacy of your healthcare provider’s office or a lab. The test is quick and painless, similar to a routine urine test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Trichomonas Test (Urine)
Frequently asked questions
If the test is positive, it confirms a *Trichomonas vaginalis* infection, which requires treatment with prescription antibiotics. Untreated infections can increase the risk of other STIs and complications like pelvic inflammatory disease.
How long does it take to get results?
Can I still have sex while waiting for results?
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