Nucleic Acid Detection in Biological Specimen by Probe-Based Assay (Qualitative)
This test detects the presence of specific DNA or RNA sequences in your sample using a molecular probe. It’s often used to confirm infections, genetic conditions, or other molecular abnormalities.
["This test helps identify genetic material that may indicate infections, hereditary disorders, or other conditions requiring molecular confirmation."]
Key facts at a glance
- LOINC
- 93404-2
- Short code
- E cloac comp DNA Bld Pos Ql NAA+probe
- Synonyms
- E cloac comp DNA Bld Pos Ql NAA+probe
- Category
- chemistry
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test uses a specialized probe designed to bind to a specific segment of DNA or RNA in your sample. If the probe binds, it confirms the presence of the target nucleic acid sequence, indicating a positive result. This method is highly sensitive and can detect even small amounts of genetic material.
Common Uses in Medical Testing
This qualitative test is commonly used for diagnosing infections (e.g., viruses, bacteria), detecting genetic mutations linked to inherited disorders, or confirming the presence of certain biomarkers in research or diagnostic contexts. It may also be used in prenatal screening or monitoring chronic conditions.
How the Test Works
The test involves extracting nucleic acids from your sample (e.g., blood, saliva, or other fluids) and applying a probe that targets a specific genetic sequence. If the probe matches the sample’s DNA/RNA, it triggers a detectable signal, confirming the presence of the target sequence.
Sample Collection and Preparation
You may provide a blood sample, saliva, or other bodily fluid depending on the clinical need. The lab processes the sample to isolate nucleic acids before applying the probe-based detection method.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test plays a critical role in confirming or ruling out conditions where genetic material is abnormal, such as infections (e.g., COVID-19, herpes), genetic disorders (e.g., cystic fibrosis, sickle cell anemia), or other molecular abnormalities. It may also guide treatment decisions or monitor disease progression in certain cases.
Short name
N/A
Frequently asked questions
Why might my doctor order this test?
What does a positive or negative result mean?
How long does it take to get 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