Liquid biopsy is an advanced cancer diagnostic test carried out using biofluids such as blood, CSF, plasma and urine for cancer detection. Liquid biopsy test can be used to detect cancer in early stages. Liquid biopsy is a non-invasive diagnostic test which uses circulating nucleic acids, circulating tumour cells (CTC) and exosomes as a biomarker for diagnosis of cancer. Aforementioned biomarkers are released into different body fluids by cancer cells into cancerous human body. Liquid biopsy test requires blood, urine and cerebral spinal fluid (CSF) samples for diagnosis of various cancers. Among all samples, blood sample is widely used for diagnosis of various cancers such as lung cancer, breast cancer and leukemia. Urine and CSF samples are used for diagnosis of prostate cancer and brain cancer respectively. Globally increasing cancer awareness and incidences is expected to drive the demand for liquid biopsy during the period of study. Geographically North America dominated global li...