Streptococcus DNA Detection by Nucleic Acid Probe (Serum/Plasma)
This test checks for the presence of genetic material from certain bacteria called *Streptococcus* in your blood. It helps identify infections caused by these bacteria, which can lead to serious illnesses like strep throat or bloodstream infections.
["This test helps determine if bacteria linked to infections are present in your bloodstream."]
Key facts at a glance
- LOINC
- 70015-3
- Short code
- Streptococcus DNA Bld Ql NAA+probe
- Synonyms
- Streptococcus DNA Bld Ql NAA+probe
- Category
- coagulation
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Ref low
- 0.8
- Ref high
- 1.2
- Critical range
- — – 5 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- CPT
- 85610
- SNOMED
- 396252006
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may order this test if you have symptoms like fever, sore throat, or signs of infection, especially if they suspect a *Streptococcus* infection. It may also be used in monitoring patients with known infections or those at higher risk, such as those with weakened immune systems.
How the Test Works
The test uses a specialized probe to detect DNA fragments from *Streptococcus* bacteria in your blood sample. This is done through a molecular biology technique that identifies genetic material without needing to grow the bacteria in a lab.
Sample Collection and Preparation
A blood sample is taken from a vein in your arm. The blood is then processed to separate the plasma or serum, which is tested for the presence of *Streptococcus* DNA.
What to Expect Before the Test
No special preparation is needed for this test. You may have a small bruise or sore spot where the needle was inserted, but this usually fades quickly. If you are on blood-thinning medication, let your provider know before the test.
Reference range
INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A
Inform your healthcare provider if you are taking blood thinners. No special preparation required.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results indicate the presence of *Streptococcus* DNA in your blood, which may suggest an active infection. This can guide treatment decisions, such as starting antibiotics. Negative results mean no detectable bacterial DNA was found, but other causes of symptoms should still be evaluated. This test is particularly useful for confirming infections that may not show up on other tests.
Short name
Strep DNA Probe
Frequently asked questions
What Does a Positive Test Mean?
What Does a Negative Test Mean?
How Often Can This Test Be Done?
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