An indicator which measures some biological state or condition is called biomarker or biological marker. It is used for a substance which indicates presence of a living being. There are four types of biomarkers namely predisposition biomarkers which inform about the possibility of developing a health disorder. Other biomarker is diagnostic biomarker which is utilized to affirm that a patient has a specific health disorder earlier than any other physical examination of a patient. Prognostic biomarker helps to indicate the process of development of a disease in individual when a specific disorder is diagnosed in the patient’s body.
