Staphylococcus aureus DNA (qualitative, probe-based nucleic acid amplification test)
This test checks for the presence of genetic material from *Staphylococcus aureus* bacteria in a blood sample. It helps determine if you have an infection caused by this type of bacteria.
["This test helps doctors diagnose infections caused by *Staphylococcus aureus* quickly and accurately."]
Key facts at a glance
- LOINC
- 92953-9
- Short code
- S aureus DNA BAL NAA+non-prb-NCncRng
- Synonyms
- S aureus DNA BAL NAA+non-prb-NCncRng
- 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 Is Done
Doctors may order this test if you have symptoms like fever, redness, swelling, or pain that could indicate an infection. It’s also used in certain situations, such as after surgery, in people with weakened immune systems, or if you’ve been exposed to *Staphylococcus aureus*.
How the Test Works
The test uses a special probe to detect genetic material (DNA) from *Staphylococcus aureus* in your blood. If the bacteria are present, the test will confirm it through a molecular method, often called a nucleic acid amplification test (NAAT).
Sample Collection
A blood sample is taken from a vein, usually in your arm. The sample is then processed in the lab to extract DNA for testing.
What to Expect Before the Test
No special preparation is needed for this test. However, if you’re on blood-thinning medication, let your doctor know before the procedure.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A positive result means *Staphylococcus aureus* DNA is found in your blood, strongly suggesting an active infection. This can guide treatment decisions, such as starting antibiotics tailored to this specific bacteria type. A negative result means the bacteria were not detected in this sample, but further testing may still be needed if symptoms persist.
Short name
S. aureus DNA Test
Frequently asked questions
What does a positive result mean?
What if I have a negative result but still feel sick?
How soon will I get my results?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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