Q. Which test tube is not used from the given option for keeping the blood in non-coagulated state? (for analysis of blood corpuscles)
A) Test tube with heparin
B) Test tube with calcium bicarbonate
C) Test tube with sodium oxylate
D) Test tube with low temperature
Explanation
Clotting of collected blood can be prevented by using silicon or adding chelating agents. Heparin is also non-coagulant but it alters the shape of RBC. So, test tube with heparin can’t be used for studying the RBC
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.