Trichomonas vaginalis DNA Qualitative Vaginal Probe Assay
This test looks for the genetic material of Trichomonas vaginalis, a common microscopic parasite, in a vaginal sample to determine whether a trichomoniasis infection is present.
["A positive result indicates that Trichomonas vaginalis DNA was detected in the vaginal sample, consistent with a current infection."]
Key facts at a glance
- LOINC
- 92700-4
- Short code
- T vaginalis DNA Vag Ql Probe
- Synonyms
- T vaginalis DNA Vag Ql 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
- 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 Detects
Trichomonas vaginalis is a single-celled parasite that can infect the vagina and nearby urinary and genital tissues. This test uses a molecular probe method to detect the organism's DNA directly, which can identify the parasite even when living organisms are present in low numbers.
How the Sample Is Collected
Your healthcare provider collects a vaginal specimen, usually with a swab, during a pelvic exam. The sample is then sent to the laboratory for processing and analysis by the nucleic acid probe method.
Understanding Your Result
A positive result means Trichomonas vaginalis DNA was found and generally indicates an active infection. A negative result means the DNA was not detected, which usually suggests the infection is not present, though timing of exposure and sample collection can affect results.
Why Testing Matters
Trichomoniasis often causes no symptoms, so testing helps identify infections that might otherwise go unnoticed. Detecting and treating the infection can relieve symptoms, prevent spread to partners, and reduce associated health risks.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Trichomonas vaginalis is one of the most common sexually transmitted infections. Untreated infection can cause vaginal discharge, irritation, and discomfort, and it has been linked to increased susceptibility to other sexually transmitted infections and complications in pregnancy. Because many infections are asymptomatic, molecular testing such as this DNA probe assay supports accurate detection and appropriate treatment, and sexual partners may also need evaluation and treatment.
Short name
T. vaginalis DNA, Vaginal
Frequently asked questions
Does a positive result always mean I have an active infection?
Can I have trichomoniasis without any symptoms?
Should my partner be tested or treated too?
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