Seraseq Unmethylated ctDNA Mutation MixThe use of ctDNA in the study and treatment of cancer continues to expand. Recent advances have highlighted CpG methylation of ctDNA a biomarker with multiple utilities. Methylation status gives insight to tumor recurrence, epigenetic regulation of gene expression and may also indicate tissue of origin of ctDNA. Despite the impactful layer of information methylation status adds to base pair level sequencing data and the proliferation of assays to