Trichomonas vaginalis Antigen Detection (Urine)
This test checks for the presence of *Trichomonas vaginalis*, a microscopic parasite that can cause infections in the urinary tract and genital areas. It helps diagnose *trichomoniasis*, a common sexually transmitted infection.
["A simple urine test to detect a parasite linked to infections that may affect your urinary or reproductive health."]
Key facts at a glance
- LOINC
- 33905-1
- Short code
- Trichomonas #/area UrnS HPF
- Synonyms
- Trichomonas #/area UrnS HPF
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- microscopy-light-hpf
- 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
Trichomoniasis is one of the most common sexually transmitted infections worldwide. If left untreated, it can cause discomfort, irritation, or even complications like urinary tract infections or increased risk of other STIs. Early detection through this test helps prevent complications and supports prompt treatment.
How the Test Works
The test uses a urine sample to detect specific antigens (proteins) produced by *Trichomonas vaginalis*. This is done through a rapid immunoassay method, which provides results in minutes. No special preparation is needed—just provide a clean urine sample.
What to Expect Before the Test
No special preparation is required. You may urinate into a clean container before your visit, or your provider may collect a urine sample directly. If you’re pregnant, inform your healthcare provider before testing, as some tests may not be recommended during pregnancy.
What to Expect After the Test
Results are typically available within minutes. If the test is positive, your provider will discuss next steps, which may include treatment with prescribed medication. If negative, further testing may be recommended if symptoms persist or risk factors are high.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Trichomonas Urine Test
Frequently asked questions
What are the possible causes of a positive result?
What if I have symptoms but the test is negative?
Can I still have the infection if my partner tested negative?
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