A) Test tube containing calcium bicarbonate
B) Chilled test tube
C) Test tube containing heparin
D) Test tube containing sodium oxalate
Correct Answer: C
Solution :
Clotting of collected blood can be prevented by coating the test tubes with silicon or adding chelating agents. Heparin is not suitable for blood counts as it alters the shape of RBC and WBC which affects blood testing.You need to login to perform this action.
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