: Cell-Free DNA Fragment Total in Plasma by Quantitative Assay

: What Is Cell-Free DNA?

: Cell-free DNA (cfDNA) is short fragments of DNA that are present in the bloodstream outside of cells. These fragments are released when cells throughout the body naturally break down and replace themselves, and they can also come from the placenta during pregnancy or from tumors. Because cfDNA is found in the liquid (plasma) portion of blood, it can be collected with a simple blood draw.

: Why Measure the Total Amount?

: Measuring the total amount of cfDNA in plasma gives an overall picture of how much circulating DNA is present. This total can be useful in research settings and in monitoring certain conditions, since the amount of cfDNA can rise or fall with changes in cell turnover, inflammation, or other processes. Your healthcare provider will interpret the result in the context of your specific situation.

: How the Test Is Done

: A blood sample is collected into a tube designed to preserve cfDNA, and the plasma is separated from the blood cells. The total cell-free DNA is then measured using a quantitative laboratory method that detects and counts the DNA fragments present. Because cfDNA can degrade quickly, careful sample handling is important for accurate results.

: What the Results May Mean

: The reported value represents the total concentration of cell-free DNA detected in the plasma sample. Results are interpreted together with your medical history and other tests; a single value on its own does not diagnose a condition. Your provider can explain what your result means for your health.