The Precision Epigenomics Liquid Biopsy Test, EPISEEK, is a blood-based test designed to detect circulating tumor DNA (ctDNA) from a simple blood draw. EPISEEK analyzes epigenomic modifications present on the ctDNA. Special software is used to analyze the results and aids the pathologist to issue a report that specifies if an abnormal signal is detected or if no cancer signal is detected. PLEASE NOTE: The sample must be received by the lab within 48 hours of collection.