Diagnostic techniques have evolved tremendously over the years and continue to be considered among the key aspects of medical operations, making clinical laboratory services an integral part of the modern medical infrastructure. The earliest known medical diagnoses made by humans were dependent on information physicians could glean through observation with their ears and eyes, sometimes also including examination of the human specimens.

Laboratory Services provides a comprehensive range of diagnostic testing and clinical and consultative services, Laboratory tests include certain blood tests, urinalysis, tests on tissue specimens, and some screening tests. They must be provided by a laboratory that meets Medicare requirements.

The history of medical laboratories is one of the major indicators of the evolution of medicine from empirical to experimental methods, thus positioning the clinical lab as an indispensable part of the medical domain. More than ever the importance of laboratory services is highlighted now.