Genomic DNA from whole blood – Quantitative PCR (qPCR) analysis for specific gene mutations (e.g., single nucleotide variants)
This test checks for specific changes (mutations) in your DNA using a sample of your blood. These mutations can sometimes be linked to increased risk for certain health conditions.
["This test helps identify genetic variations that may influence your health risk or guide personalized medical decisions."]
Key facts at a glance
- LOINC
- 44878-7
- Short code
- S aureus Etx A gene Spec Ql NAA+probe
- Synonyms
- S aureus Etx A gene 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 Might Be Ordered
Your healthcare provider may recommend this test if you have a family history of certain genetic disorders, symptoms that suggest a genetic condition, or if you’re at higher risk for conditions like cancer, heart disease, or metabolic disorders. It can also be used for pre-symptomatic screening or before certain treatments.
How the Test Works
A small blood sample is taken, and your DNA is extracted. Specialized lab equipment then detects and quantifies specific mutations in your DNA using PCR technology. This process is highly sensitive and can identify even tiny changes in your genetic material.
What to Expect Before the Test
You can prepare for this test just like any other blood draw. Wear comfortable clothing, avoid eating or drinking for 8–12 hours before if instructed, and stay hydrated. Bring any medications or supplements you’re currently taking to discuss with your provider.
What to Expect During the Test
The blood sample is drawn from a vein in your arm, similar to a regular blood test. The process takes about 5 minutes, and you may feel a slight pinch. The lab then processes your sample to analyze the DNA for mutations.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test can help identify genetic mutations that may increase your risk for conditions like certain cancers (e.g., breast, colorectal), heart disease, or metabolic disorders. Knowing your genetic profile can inform treatment choices, monitor disease risk, or guide preventive strategies. However, results should always be interpreted by a healthcare provider in the context of your overall health and medical history.
Short name
Gene Mutation Test (Blood)
Frequently asked questions
How long does it take to get results from this test?
What does a positive result mean?
Can this test be used for prenatal or carrier screening?
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