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You are required to draw blood from a pa...

You are required to draw blood from a patient and to keep in it a test tube for analysis of blood cropuscles and plasma. You are also provided with the following four types of test tuebes. Which of them will you not use for the purpose.

A

Test-tube containing calcium bicarbonate

B

Chilled test tube

C

Test tube containing heparin

D

Test tube containing sodium oxalate

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Clotting of collected blood can be prevented by coating the test tube with silicon or adding chelating agents. Citrate, oxalate, heparin and EDTA are anticoagulants.
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