it is a collection of techniques used to analyse biological markers in the genome and proteome—the individual’s genetic code and how their cells express their genes as proteins—by applying molecular biology to medical testing. PCR is currently the most widely used method for detection of DNA sequences using real time PCR, direct sequencing, microarray chips. Detection of HIV, Hepatitis infection, Tuberculosis, Swine Flu and latest Covid 19 infection is being done at DSP.