DNA Fragmentation Index (measured via a qualitative assay on whole blood)
This test evaluates the presence of fragmented DNA in your blood, which may indicate stress on your cells or certain health conditions.
["Assessing DNA fragmentation can help identify when your body’s cells are under unusual stress or damage."]
Key facts at a glance
- LOINC
- 104620-0
- Short code
- DNA fragmentation index Smn FC-sRto
- Synonyms
- DNA fragmentation index Smn FC-sRto
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- flow-cytometry
- 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
DNA fragmentation refers to the breakdown of DNA strands into smaller pieces. Normally, this happens naturally during cell death, but elevated levels can signal excessive cell stress, such as during trauma, infection, or certain diseases. This test detects these fragments qualitatively, meaning it provides a yes/no or present/absent result rather than a precise measurement.
Why It Might Be Ordered
Your healthcare provider may order this test to investigate symptoms like fatigue, unexplained bruising, or signs of systemic inflammation. It can also be part of a broader evaluation for conditions affecting cell health, such as autoimmune diseases or severe infections.
Sample Collection and Preparation
A small blood sample is drawn from your arm. The test is performed on whole blood, and results are typically reported as qualitative (positive or negative for DNA fragmentation). No special preparation is needed, but fasting may not be required unless specified by your provider.
What the Results Mean
A positive result (detecting fragmented DNA) suggests your cells may be experiencing stress or damage. This could be due to acute events like trauma, severe illness, or chronic conditions. A negative result means no significant fragmentation was detected in this sample.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
DNA Fragmentation Index (DNA Frag Index)
Frequently asked questions
How is this test used in diagnosis or monitoring?
What are the typical reference ranges or thresholds for this test?
Can this test be used to monitor chronic conditions like cancer or autoimmune diseases?
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