Test guide
Cancer DNA to Total Tumor Tissue DNA Ratio Measurement
The determination of the ratio of cancer-derived DNA compared to total DNA in a tumor sample. The measurement may be expressed as a ratio, fraction or percentage.
What it is for
Source: National Cancer Institute, NCI Thesaurus 26.10d, C206454. Unmodified NCI definition, CC BY 4.0. Source identity and classification checked automatically on 2026-10-30.
Limitations
Terminology reference for a laboratory procedure. The source definition does not establish routine clinical availability, validated specimen types, reference intervals, product authorization or suitability for an individual. Consult the performing laboratory for its validated method and interpretation.
Also known as
- Cancer DNA to Total Tumor Tissue DNA Measurement
- Cancer DNA to Total Tumor Tissue DNA Ratio Measurement
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