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Genital tract nucleic acid probe test for sexually transmitted infections (STI)

Published: August 9, 2026Updated: August 16, 2026

This test detects genetic material from certain bacteria and viruses in samples collected from the genital area to identify sexually transmitted infections.

Quick summary

["A quick, accurate way to screen for common STIs using a simple swab sample."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
103633-4
Short code
CT + NG + TV Genital fl Ql NAA+probe
Synonyms
CT + NG + TV Genital fl Ql NAA+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-amp-tar
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

How the Test Works

A healthcare provider collects a sample from your genital area using a sterile swab. The swab is then analyzed in a lab to identify genetic material from specific STIs, including chlamydia, gonorrhea, and other pathogens. This method is highly sensitive and can detect infections even when symptoms are not present.

Sample Collection

The test uses a swab to gather cells and fluids from your genital area. This is typically done during a routine office visit or clinic visit. You may be asked to clean the area with mild soap and water beforehand to ensure the sample is representative.

What to Expect Before the Test

No special preparation is needed for this test. You may have a slight discomfort or mild burning sensation during the swab collection, but it usually lasts only a few seconds. If you experience pain or unusual bleeding afterward, contact your healthcare provider.

Common Infections Detected

This test can identify genetic material from common STIs such as chlamydia, gonorrhea, and sometimes human papillomavirus (HPV) and other bacteria or viruses depending on the specific probe used. Early detection is crucial for prompt treatment and prevention of complications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

STI nucleic acid probe test

Frequently asked questions

Why is this test important?
Early detection of STIs through this test helps prevent complications like pelvic inflammatory disease, infertility, and chronic pelvic pain. It also allows for timely treatment to reduce the risk of spreading infections to sexual partners.
How soon can I get results?
Results are usually available within 24 to 48 hours, depending on the lab’s processing schedule. Your healthcare provider will discuss the results with you during a follow-up visit.
What if I get a positive result?
If the test is positive, your healthcare provider will prescribe appropriate antibiotics or antiviral medication to treat the infection. You will also be advised to notify your sexual partners for potential treatment and testing to prevent further spread.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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