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Pneumococcal Nucleic Acid Detection (Serum/Plasma)

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

This test checks for genetic material from *Streptococcus pneumoniae* (pneumococcal bacteria) in your blood or plasma, which may indicate an infection requiring urgent medical attention.

Quick summary

["Early detection of pneumococcal infection can help guide faster treatment options."]

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

Key facts at a glance

LOINC
111566-6
Short code
C pneum DNA BAS Ql NAA+n-prb
Synonyms
C pneum DNA BAS Ql NAA+n-prb
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
non-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 Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like high fever, difficulty breathing, or signs of severe infection, especially if you’re at higher risk (e.g., elderly, immunocompromised, or with chronic health conditions). It’s also used in certain clinical settings to screen for bacterial pneumonia or sepsis caused by pneumococcal bacteria.

What to Expect Before the Test

No special preparation is needed. Blood is drawn from a vein, usually in your arm, and sent to the lab for analysis. The test is typically done as part of an emergency or routine evaluation.

What the Test Results Mean

A positive result means genetic material from pneumococcal bacteria was detected. This suggests an active infection and may prompt immediate treatment with antibiotics targeting *S. pneumoniae*. A negative result means no detectable genetic material was found, but further testing or observation may still be needed depending on your symptoms.

Common Causes of False Results

False positives or negatives can occur due to lab errors, recent antibiotic use, or cross-contamination. If your results are unclear, your doctor will discuss next steps with you.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Pneumococcal infections can be life-threatening if untreated, especially in vulnerable populations. Early identification allows healthcare providers to administer targeted antibiotics, reduce complications, and improve outcomes. This test helps rule out or confirm pneumococcal infections quickly, which is critical in managing severe cases like pneumonia or sepsis.

Short name

Pneumococcal DNA Screening

Frequently asked questions

How long does it take to get results from this test?
Results are usually available within 24 hours, depending on lab processing times. Your doctor will contact you directly with the outcome.
Can I eat or drink before this test?
No special diet or fasting is required. You can eat and drink normally before the blood draw.
Is there any risk or discomfort with this test?
The blood draw may cause mild discomfort or bruising at the site, but it’s generally quick and well-tolerated. Rarely, there may be a slight pinch or swelling, but serious reactions are uncommon.
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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