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Solution


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
1 A
2 B
3 C
4 D

Ans.

(a) 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