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 these you will not use for the purpose?
Correct answer: A. Test tube containing calcium bicarbonate
- A. Test tube containing calcium bicarbonate
- B. Normal test tube
- C. Test tube containing heparin
- D. Test tube containing sodium oxalate
Explanation
Calcium plays a very important role in blood clotting by converting prothrombin into thrombin. The presence of calcium will remove heparin (blood anti-coagulant) and will promote blood clotting.
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