Molecular diagnostics is growing rapidly. Molecular diagnostics tests detect specific sequences in DNA or RNA which will or might not be related to disease including single nucleotide polymorphism. the expansion in diagnostics sector and personalised therapy is being driven by opportunities in molecular diagnostics. Molecular diagnostic tests detect specific sequences in DNA or RNA which will or might not be related to disease, including single nucleotide polymorphism (SNP), deletions, rearrangements, insertions et al. Because the science of genomic advances genetic testing is becoming more common place within the clinic. Genetics tests are tests on blood and other tissue to seek out genetic disorders. The Food and Drug administration has the authority to manage genetic tests. The term genetic testing covers an array of techniques including analysis of human DNA, RNA, or protein.