What a Biomarker is?

A biomarker, or biological marker, refers to a measurable indicator of some biological state or condition. Biomarkers are often used in scientific research, clinical diagnosis, and the monitoring of disease progression. They can be a wide range of biological substances or molecules found in blood, other body fluids, or tissues, indicating either a normal or diseased process in the body. Examples include genes, enzymes, hormones, and cells. Biomarkers play a crucial role in early detection, diagnosis, and treatment monitoring of diseases. They also assist in understanding the efficacy of therapeutic interventions and in the development of personalized medicine approaches.