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Pneumococcal Nasopharyngeal Culture with Qualitative Detection of *Pneumococcus* (via qPCR)

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

This test checks for the presence of *Pneumococcus* bacteria in your nasal passages using a simple swab and a molecular test to detect genetic material.

Quick summary

["Helps diagnose pneumonia or other infections caused by *Pneumococcus* bacteria."]

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

Key facts at a glance

LOINC
29257-3
Short code
M pneumo DNA Spec Ql NAA+probe
Synonyms
M pneumo DNA Spec 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
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 fever, cough, or difficulty breathing that suggest a bacterial lung infection. It’s also used in certain high-risk groups, such as those with weakened immune systems or chronic health conditions.

How the Test Works

A swab is gently inserted into your nose to collect a sample of cells and secretions. The sample is then analyzed in a lab using a molecular technique (qPCR) to detect genetic material specific to *Pneumococcus* bacteria, even if the bacteria aren’t growing in a traditional culture.

Sample Collection

No special preparation is needed. You may experience mild discomfort or a slight tickle when the swab is inserted, but it usually takes only a few seconds.

What to Expect After the Test

You can return to your normal activities immediately. Results may take a few days to a week, depending on lab processing times.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Pneumococcal PCR Test

Frequently asked questions

How long does it take to get my test results?
Results typically take 3 to 7 business days, depending on your lab’s processing schedule. Your healthcare provider will contact you once they are ready.
What if my test is positive?
A positive result means you likely have an infection caused by *Pneumococcus*. Your doctor will determine the best treatment, which may include antibiotics. Follow-up care may be needed to monitor for complications.
Can I have this test if I’ve already taken antibiotics?
Yes, this test can still be performed even if you’ve taken antibiotics, as it detects genetic material rather than live bacteria. However, your doctor may need to adjust treatment plans based on the results.
  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