Which one of the following anticoagulants is added in blood during storage?
A
Sodium carbonate
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B
Sodium oxalate
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C
Sodium chloride
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D
Sodium hydroxide
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Solution
The correct option is A Sodium oxalate Sodium oxalate is the sodium salt of oxalic acid. Sodium oxalate is used to remove calcium ions from blood plasma and prevents blood from clotting because calcium is used as a cofactor of enzymes for activation of clotting factors.