To prevent clotting, donor's blood is treated with
A
Sodium glycocholate
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B
Sodium citrate
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C
Heparin
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D
Sodium taurocholate
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Solution
The correct option is B Sodium citrate
Buffered sodium citrate is used in clinical laboratories and blood banks as an effective anti-coagulant, usually in a ratio of 1 : 9 sodium citrate/blood. The citrate ion chelates calcium ions in the blood by forming calcium citrate complexes and disrupting the blood clotting mechanism, thus prevents clotting of blood