Quantitative Detection of Tropic (Tumor-Associated) DNA in Plasma Using a Specific Probe
This test measures the amount of DNA from specific tumor-related sequences found in your blood plasma. It may help identify or monitor certain cancers.
["Assists in cancer detection or surveillance by tracking tumor-derived DNA in your blood."]
Key facts at a glance
- LOINC
- 101945-4
- Short code
- C tropicls DNA Spec Ql NAA+probe
- Synonyms
- C tropicls DNA Spec Ql 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 Is Tropic DNA?
Tropic DNA refers to DNA fragments derived from tumor cells that circulate in your blood. These fragments can carry genetic information unique to certain cancers, such as those from ovarian, breast, or prostate tumors. Detecting these DNA sequences can help doctors track cancer progression or response to treatment.
How Is This Test Performed?
A small blood sample is drawn from your arm. The plasma portion is then analyzed using a specialized probe to quantify tumor-specific DNA sequences. The test is typically done in a laboratory setting with advanced molecular techniques.
Why Might You Need This Test?
This test may be recommended if you have a known cancer, are at high risk for certain cancers, or are undergoing treatment to monitor disease activity. It can also help in early detection in some cases, especially when combined with other diagnostic tools.
What Are the Possible Results?
Results can vary widely. A detectable level of tropic DNA may suggest the presence of cancer or disease activity, while very low or undetectable levels may indicate no active tumor DNA. Your doctor will interpret results in the context of your medical history and other tests.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Tropic DNA testing provides a non-invasive way to monitor cancer by detecting tumor-derived genetic material in the blood. It can be particularly useful for tracking recurrence, assessing treatment response, or identifying early signs of cancer in high-risk patients. This approach complements traditional imaging and biopsy methods by offering a liquid biopsy alternative.
Short name
Tropic DNA Plasma Test (Quantitative)
Frequently asked questions
What does a positive result mean?
How often will I need this test?
Are there any risks or side effects?
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