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Chlamydia trachomatis nucleic acid detection (urine)

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

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

Quick summary

["A simple urine test to detect *Chlamydia* infection, often used for early screening and treatment planning."]

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

Key facts at a glance

LOINC
69865-4
Short code
Process for assays-GC/Chlamydia PhenX
Synonyms
Process for assays-GC/Chlamydia PhenX
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
phenx
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 Matters

Chlamydia is one of the most common sexually transmitted infections (STIs) in the U.S. and can cause serious health issues if untreated, such as pelvic inflammatory disease, infertility, or complications during pregnancy. This test is quick and painless, using a urine sample to identify the infection early.

How the Test Works

The test uses a specialized molecular method (nucleic acid amplification) to detect genetic material from *Chlamydia* in your urine. No blood draw is needed—just a small urine sample collected at your healthcare provider’s office or a self-collected sample if instructed.

Preparation and Sample Collection

No special preparation is needed for this urine test. You may collect the sample at home (if directed) or provide a sample directly to your provider. Follow their instructions carefully to ensure accuracy.

What to Expect After the Test

Results are typically available within 1–3 business days. If the test is positive, your provider will discuss next steps, which may include treatment with antibiotics. If negative, further testing or follow-up may be recommended depending on your symptoms and risk factors.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Urine Chlamydia Test

Frequently asked questions

What does a positive result mean?
A positive result indicates the presence of *Chlamydia* genetic material in your urine, suggesting an active infection. Treatment with antibiotics (such as azithromycin or doxycycline) is usually prescribed, and you’ll need to complete the full course as directed. Your partner(s) should also be tested and treated to prevent reinfection.
What does a negative result mean?
A negative result means the test did not detect *Chlamydia* genetic material in your urine at the time of testing. However, STIs can sometimes be missed with a single test, so your provider may recommend retesting or additional testing if you have symptoms or risk factors for infection.
How often should I get tested?
Testing frequency depends on your risk factors. The Centers for Disease Control and Prevention (CDC) recommends annual testing for sexually active individuals under 25 who have multiple partners, or for anyone with new or multiple partners. If you have symptoms (e.g., unusual discharge, pain during urination), see your provider sooner for testing.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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