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Chlamydia trachomatis nucleic acid test (serum/plasma)

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

This test detects genetic material from *Chlamydia*, a common bacterial infection that can affect the reproductive organs, eyes, or respiratory tract.

Quick summary

["Helps confirm or rule out chlamydia infection in a blood sample."]

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

Key facts at a glance

LOINC
96075-7
Short code
HEDIS MY 2020 Chlamydia Tests
Synonyms
HEDIS MY 2020 Chlamydia Tests
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 lab technique to identify genetic material (nucleic acids) from *Chlamydia* in your blood. It does not measure antibodies but directly detects the bacteria’s DNA or RNA, which helps confirm infection even if symptoms are mild or absent.

Why It’s Ordered

Your healthcare provider may order this test if you have symptoms like fever, fatigue, or unexplained infections, or if you’re at higher risk (e.g., sexually active individuals, those with recurring infections). It’s also used in research or rare cases where traditional tests are inconclusive.

Sample Collection

Blood is drawn from a vein, usually in your arm. The sample is sent to a lab where it’s processed to extract the genetic material for testing.

Results Interpretation

Results are qualitative (positive or negative) and indicate whether *Chlamydia* DNA was found. A positive result means the test detected genetic material, suggesting infection, but further testing (e.g., culture) may be needed for confirmation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Frequently asked questions

What does a positive result mean?
A positive result means the test detected genetic material from *Chlamydia* in your blood, which may indicate an active infection. This could be due to a primary infection, reactivation, or rare cases of disseminated disease. Consult your doctor for guidance on next steps, including whether additional testing or treatment is needed.
Can this test replace other chlamydia tests?
No, this test is not a standard screening tool for chlamydia. It’s primarily used in research, rare clinical scenarios, or when traditional methods (e.g., urine or swab tests) are inconclusive. Your doctor will determine the best approach based on your symptoms and medical history.
How long does it take to get results?
Results are typically available within 2–5 business days, depending on lab processing times. Your healthcare provider will contact you once results are ready, but always follow up if you have concerns or symptoms worsen.
  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