Molecular diagnostics is a branch of laboratory medicine that deals with the detection of specific genetic sequences, proteins, or other molecules in order to diagnose diseases, predict treatment outcomes, and monitor patient responses to therapy. This field utilizes various techniques such as polymerase chain reaction (PCR), gene sequencing, and immunoassays to analyze biological samples such as blood, tissue, or saliva. Molecular diagnostics has revolutionized the field of medicine by providing rapid and accurate diagnosis, personalized treatment plans, and targeted therapies for a wide range of diseases including cancer, infectious diseases, genetic disorders, and more.