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Chlamydia trachomatis Nucleic Acid Detection by Molecular Probe (Genital Tract)

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 rectum. It helps diagnose infections that may cause symptoms like discharge, pain, or other discomfort.

Quick summary

["A molecular probe test can detect *Chlamydia* infections quickly, often without symptoms, to guide treatment and prevent complications."]

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

Key facts at a glance

LOINC
35722-8
Short code
Chlamydia DNA Ser Ql NAA+probe
Synonyms
Chlamydia DNA Ser 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

The test uses a specialized probe to identify genetic material from *Chlamydia trachomatis* in a sample collected from the genital area (e.g., urine, cervical swab, or urethral swab). This method is highly sensitive and can detect even small amounts of the bacteria’s DNA.

Sample Collection

You may provide a urine sample or a swab collected by a healthcare provider from the cervix, urethra, or rectum, depending on your anatomy and symptoms. The sample is then processed in a lab to analyze for the bacterial genetic material.

What to Expect Before the Test

No special preparation is needed, but inform your provider if you’re pregnant, have recent sexual contact, or are on antibiotics. Avoid douching or using vaginal products 24 hours before testing if a swab is used.

What to Expect After the Test

Results are typically available within 1–3 business days. If positive, follow-up care (e.g., antibiotics) will be recommended to treat you and your sexual partners.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Chlamydia DNA Probe Test

Frequently asked questions

Why was I tested for *Chlamydia*?
You may have been tested due to symptoms (e.g., unusual discharge, pain during urination) or as part of a routine screening if you’re sexually active with multiple partners, pregnant, or have a history of STIs.
What does a positive result mean?
A positive result means the test detected *Chlamydia trachomatis* DNA in your sample. This confirms an infection and requires treatment with antibiotics to clear the bacteria. Your provider will guide you on next steps, including partner notification and follow-up.
Can I still have sex while waiting for results?
No, it’s important to avoid sexual contact until you’ve completed treatment and your provider confirms the infection is resolved. This helps prevent spreading the infection to others.
  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