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Chlamydia DNA Detection by Nucleic Acid Amplification Probe (Genetic Test)

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

This test checks for the presence of genetic material from *Chlamydia trachomatis*, a common bacterial infection that can affect the genitals, throat, or eyes. It helps diagnose infections that may not cause obvious symptoms.

Quick summary

["A simple test to detect a sexually transmitted infection (STI) that can cause serious health problems if untreated."]

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

Key facts at a glance

LOINC
35412-6
Short code
Chlamydia DNA Nose Ql NAA+probe
Synonyms
Chlamydia DNA Nose 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

Why This Test Is Done

Your healthcare provider may recommend this test if you have symptoms like unusual discharge, pain during urination, or unexplained pelvic pain. It’s also used as a routine screening for sexually active individuals at higher risk of infection, such as those with multiple partners or new sexual partners. Some women may get this test during annual exams or before pregnancy.

How the Test Works

The test uses a small sample of urine (or sometimes cervical/vaginal swabs) to detect genetic material from *Chlamydia*. A special probe targets the bacteria’s DNA, and a machine amplifies and identifies it. This method is highly sensitive and accurate for detecting even small amounts of infection.

Sample Collection

You’ll likely provide a urine sample in the morning, or a swab may be collected from your cervix (for women) or urethra (for men). No special preparation is needed, but avoid urinating right before the test if a swab is used.

Test Results and Follow-Up

Results are usually available within a few days. If the test is positive, your provider will prescribe antibiotics to treat the infection. Follow-up testing may be needed to confirm treatment success. If negative, retesting is recommended if symptoms persist or you’ve had recent sexual exposure.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Chlamydia DNA Test (PCR)

Frequently asked questions

How long does it take to get results?
Results are typically ready within 2–5 business days, depending on your lab’s processing time. Your healthcare provider will contact you directly with the results.
What if I have symptoms but the test comes back negative?
Symptoms can sometimes take weeks or months to develop after exposure. If you’ve had recent sexual contact, retesting is recommended. Other infections (like gonorrhea) may also cause similar symptoms, so your provider may suggest additional testing.
Can I still have sex while waiting for results?
Avoid sexual contact until you’ve completed treatment (if positive) and retested to confirm clearance. Always use protection if you’re unsure about your partner’s status to prevent reinfection or spreading the infection.
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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