Body Fluids and CirculationMedium
Question
You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of them will you not use for the purpose ?
Options
A.Test-tube containing calcium bicarbonate
B.Chilled test-tube
C.Test-tube containing heparin
D.Test-tube containing sodium pxalate
Solution
Clotting of collected blood can be prevented by coating the tubes with silicon or adding chelatihg agents. Citrate, oxalate, heparin and EDTA are anticoagulants.
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