A biosensor is an analytical device containing an immobilized biological material (enzyme, antibody, macromolecule, hormone, cell organ or whole cell) which may specifically act with an analyte and manufacture Physical, chemical or electrical signals which will be measured. an analyte could be a compound (e.g. glucose, urea, drug, pesticide) whose concentration should be measured.

Biosensors essentially involve the chemical analysis of assorted substances by changing their biological ac