Cancer Genetic DNA Analysis Using a Specific Probe (e.g., Tumor or Germline DNA)
This test checks for specific DNA sequences in your blood that may be linked to certain cancers, often used to identify hereditary risks or confirm genetic mutations in tumors.
["Helps assess cancer risk or guide treatment based on genetic factors."]
Key facts at a glance
- LOINC
- 92785-5
- Short code
- CUTACNA
- Synonyms
- C acnes DNA Bld Pos Ql NAA+probe
- Category
- chemistry
- Sample
- whole-blood
- Container
- Positive blood culture bottle (aerobic or anaerobic) submitted in original blood culture set
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- CPT
- 87798
- SNOMED
- 415684004
- Specimen volume
- Specimen aliquot taken from positive blood culture bottle; typically 1-3 mL transferred to a sterile tube or processed directly from the bottle
- Stability
- Process positive blood culture as soon as growth is detected; stable for up to 24 hours at room temperature (15-25°C) or refrigerated (2-8°C) prior to molecular testing
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
This test analyzes DNA from your blood sample to detect specific genetic sequences—such as those associated with inherited cancer syndromes or mutations present in tumor cells. The probe used targets particular DNA fragments that may indicate susceptibility to or involvement in cancer development.
Why It’s Ordered
Your healthcare provider may recommend this test if you have a family history of cancer, symptoms suggestive of a genetic predisposition, or if you’re undergoing cancer treatment to evaluate tumor genetics.
Common Uses
Common applications include hereditary cancer screening (e.g., BRCA-related cancers), tumor profiling for precision oncology, or assessing genetic risks in asymptomatic individuals.
Sample Collection
A blood sample is drawn from a vein, typically in a clinic or lab. The DNA is extracted from your white blood cells or other cells in the sample for analysis.
Reference range
Not applicable; qualitative test reported as Detected or Not DetectedN/A
No special patient preparation required. Specimen is collected from a positive blood culture bottle; ensure proper aseptic technique during collection to avoid contamination
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Frequently asked questions
This test helps identify genetic mutations that may influence cancer risk, treatment options, or surveillance needs. For example, detecting BRCA mutations could guide breast/ovarian cancer screening or chemoprevention strategies.
What does a positive 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