Genomic DNA from blood sample, quantified by probe-based assay (qualitative probe detection)
This test detects the presence of specific genetic material (DNA) in your blood using a probe-based method, which helps assess certain genetic conditions or mutations.
["This test checks for specific DNA sequences in your blood that may indicate inherited genetic risks or conditions."]
Key facts at a glance
- LOINC
- 97636-5
- Short code
- Gp B Strep DNA Snv Ql NAA+n-prb
- Synonyms
- Gp B Strep DNA Snv Ql NAA+n-prb
- Category
- coagulation
- Sample
- fluid
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- non-probe-amp-tar
- Specimen volume
- 2-5 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h
- Hemolysis max
- 300
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test analyzes a sample of your blood to identify particular DNA sequences using a specialized probe. These probes bind to specific genetic regions, allowing for detection of genetic material. This is often used for screening or confirming genetic variants that may influence health risks or disease predispositions.
Why It Might Be Ordered
Your healthcare provider may order this test if you have a family history of genetic disorders, if you are at risk for certain inherited conditions, or if you are undergoing genetic counseling or testing for conditions like cancer predisposition syndromes.
How the Test Works
Blood is collected and processed to extract DNA. The DNA is then exposed to probes designed to match specific genetic sequences. If the probe binds to the DNA, it indicates the presence of that genetic sequence, which is detected and reported.
Preparation and Sample Collection
No special preparation is needed for this test. You will have a blood draw, similar to other blood tests. The sample is processed in a lab to isolate DNA for analysis.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test can help identify genetic mutations linked to inherited conditions, such as certain cancers, metabolic disorders, or cardiovascular risks. Early detection can guide preventive measures, monitoring, or treatment decisions. It is particularly useful in genetic counseling and personalized medicine approaches.
Frequently asked questions
What does a positive result mean?
How long does it take to get results?
Is there any risk or discomfort with this test?
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