Mean Cell-free Circulating Tumor DNA Molecules per Milliliter

**Semantic type:** Quantitative Concept

**Definition:** A measure of the concentration of cell-free tumor DNA expressed as the mean number of copies per unit of one milliliter.

**Synonyms:** - Cell-free Circulating Tumor DNA Molecules Mean per Milliliter - MTM/mL - Mean Tumor Molecules per Milliliter - Mean ctDNA Molecules per Milliliter