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Fig:1 Author's Prototype of blood group detection BLOOD GROPU DETECTION SENSOR http://tronixtube.890m.com/blood-detection.php Akshay Kinake/18 Dec 2016/Electronics The proposed idea is to replace the manual work in clinical laboratories for identifying the blood group. For large data may misdeed to maintain the blood sample and records accurately In this new technique, the LASER source and photocell are used to analyse the ABO blood grouping (A, B, O) and Rhesus type testing (Rh +ve and-ve).. Concept Blood sample for which blood group is to be identified is placed in the glass slide between the LASER beam and photocell. After these arrangements, the voltage from the photocell is decreased from due to the variations in LASER beam intensity. Then a drop of antigen is added to a drop of blood sample which is on the transparent glass slide. If the clumping (the agglutination reaction) occurs, then the density of the blood sample changes (high) which in turn changes int...