Question

why NA salt of edta is uesd
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Answer 1

For use as an anticoagulant, disodium or tripotassium salts of EDTA are most commonly used. ... EDTA prevents platelet aggregation and is therefore the preferred anticoagulant for platelet counts. 3 From a 2% EDTA solution, 1-2 drops per ml of whole blood can be used as an anticoagulant.