Quantitative detection of specific DNA sequences in serum/plasma using probe-based amplification
This test measures certain DNA fragments in your blood to identify specific genetic markers, often used to detect infections, genetic mutations, or other molecular abnormalities.
["Helps diagnose conditions by detecting unique genetic sequences in your bloodstream."]
Key facts at a glance
- LOINC
- 43404-3
- Short code
- C trach DNA Spec Ql Probe+sig amp
- Synonyms
- C trach DNA Spec Ql Probe+sig amp
- 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-sig
- CPT
- 82784
- 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
This test uses specialized probes to detect and quantify specific DNA sequences in your serum or plasma. The probes bind to target DNA fragments, allowing for precise identification and measurement. This method is particularly useful for detecting pathogens, genetic variants, or other molecular markers that may not be visible through traditional blood tests.
Why It Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms suggestive of an infection, genetic disorder, or other conditions where specific DNA sequences play a role. It can also be used for monitoring certain treatments or conditions that involve genetic markers.
Common Uses
Common applications include identifying viral infections (e.g., certain bacteria, viruses), detecting genetic mutations linked to hereditary diseases, or monitoring chronic conditions where DNA markers are relevant.
Sample Collection and Preparation
A blood sample is drawn from a vein, typically in your arm. The blood is then processed to separate serum or plasma, which is sent to the lab for testing. This process helps ensure accurate detection of the DNA sequences.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
DNA Probe Test (Serum/Plasma)
Frequently asked questions
This test provides detailed molecular information that can help confirm diagnoses, guide treatment decisions, or assess disease progression. It may be particularly useful in cases where traditional tests are inconclusive or where genetic factors are suspected.
What does a positive result mean? A positive result indicates the presence of the specific DNA sequences being tested for, which may suggest an infection, genetic mutation, or other underlying condition. Your doctor will discuss the implications with you based on your symptoms and test results.
Is there any preparation needed before the test? Generally, no special preparation is required for this test. However, you may be asked to avoid certain medications or foods if your doctor specifies, as they could affect test results.
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