Genetic test for detection of specific nucleotide sequences in plasma using a probe (e.g., for hereditary conditions or genetic screening)
This test checks for the presence of a particular DNA sequence in your blood, often used to identify genetic predispositions or confirm suspected hereditary conditions.
["This test helps identify genetic variations that may influence health risks or diagnose inherited disorders."]
Key facts at a glance
- LOINC
- 77577-5
- Short code
- CT+NG DNA Pnl Urth NAA+probe
- Synonyms
- CT+NG DNA Pnl Urth 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 a specific segment of your DNA (nucleotide sequence) using a molecular probe. This probe binds to the target DNA if it is present in your blood plasma. The presence of this sequence can indicate a genetic condition or trait, depending on clinical context.
Why It Might Be Ordered
Your healthcare provider may recommend this test if you have a family history of a genetic disorder, symptoms suggestive of a hereditary condition, or if you’re part of a genetic screening program. It can also be used to confirm a suspected diagnosis or monitor genetic risks.
Sample Collection and Preparation
A blood sample is drawn from a vein in your arm. The plasma portion of the blood is then processed and analyzed for the target DNA sequence. This test does not require fasting or special preparation beyond standard blood draw guidelines.
What to Expect During the Test
After your blood is drawn, it is sent to a lab for processing. Results are typically available within days to weeks, depending on the lab’s workflow. You’ll receive a report from your healthcare provider with detailed findings.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
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 routine health checks?
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