Chlamydia trachomatis Nucleic Acid Detection by Nucleic Acid Amplification Probe (Genital Tract)
This test checks for the presence of *Chlamydia trachomatis*—a common bacterial infection that can affect the genitals, throat, or rectum. It uses a genetic probe to detect the infection quickly, often within a few days of testing.
["Detects sexually transmitted bacterial infection with a simple, highly accurate probe-based test."]
Key facts at a glance
- LOINC
- 35724-4
- Short code
- Chlamydia DNA Throat Ql NAA+probe
- Synonyms
- Chlamydia DNA Throat 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
- CPT
- 87110
- 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 small sample (often collected from the cervix, urethra, throat, or rectum) is taken and analyzed using a specialized probe that targets the genetic material of *Chlamydia*. If the infection is present, the probe binds to its DNA, triggering a detectable signal. This method is highly sensitive and specific, often used as a screening or confirmatory test.
Why You Might Need This Test
Doctors recommend this test if you have symptoms like unusual discharge, pain during urination, or unexplained pelvic pain. It’s also routinely advised for sexually active individuals, especially those with multiple partners, or during routine check-ups. Some health providers use it as part of STI screening, especially for women during annual exams.
What to Expect Before the Test
No special preparation is needed. Your sample may be collected during a pelvic exam (for women), a swab from the urethra (for men), or a throat swab (if infection is suspected in the throat). If testing the rectum, a sterile brush may be used. The procedure is quick and usually painless.
What to Expect During the Test
The test itself is a simple process: a healthcare provider collects the sample, which is then sent to a lab for analysis. Results are typically available within 24–48 hours, depending on the lab’s processing time. You may receive results over the phone, email, or through your healthcare provider’s portal.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Untreated *Chlamydia* can lead to serious complications, including pelvic inflammatory disease (PID) in women, which may cause infertility or chronic pelvic pain. In men, it can cause epididymitis or urethritis. If left untreated, it may also spread to other parts of the body, including the eyes or joints. Early detection and treatment with antibiotics can prevent these complications and reduce transmission to sexual partners.
Short name
Chlamydia Genital Tract Probe Test
Frequently asked questions
How long does it take to get results?
What does a positive result mean?
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