Genetic analysis for specific single nucleotide variants (SNVs) in a plasma sample using a probe-based assay for hereditary conditions
This test checks for specific genetic changes (mutations) in your blood plasma that may be linked to inherited conditions like certain cancers, metabolic disorders, or cardiovascular risks.
["This test helps identify genetic variations that could influence your health risk or guide treatment options."]
Key facts at a glance
- LOINC
- 81659-5
- Short code
- EC stx1 + stx2 genes Pnl Stl NAA+probe
- Synonyms
- EC stx1 + stx2 genes Pnl Stl 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
What This Test Measures
The test detects specific single nucleotide variants (SNVs) in your DNA using a targeted genetic probe. These probes bind to particular DNA sequences associated with known genetic conditions. The method detects whether those sequences are altered (mutated) compared to a standard reference.
How the Test Works
Your blood plasma is collected and analyzed using a molecular probe technique. The test looks for precise genetic differences that may not show up in standard blood tests. This helps pinpoint whether you carry certain genetic risks.
Why It Might Be Ordered
Your healthcare provider may recommend this test if you have a family history of genetic disorders, symptoms suggesting a genetic condition, or if you’re at higher risk for certain inherited diseases.
What to Expect Before the Test
No special preparation is needed. You’ll have a simple blood draw, similar to other routine blood tests. The plasma portion is then processed for genetic analysis.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Identifying these genetic variants can help determine your risk for conditions like Lynch syndrome (a cancer predisposition), familial hypercholesterolemia, or other hereditary disorders. Early detection may influence preventive measures, monitoring, or treatment decisions.
Short name
SNV Probe Test (Plasma)
Frequently asked questions
Will this test show all possible genetic conditions?
How long will it take to get results?
Can I fast before 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