prevent clotting of whole blood. They are used when plasma is preferred sample

as in the analysis of acid phosphates whose value is very ↑ when serum is used

because of the disintegration of platelet during clotting.

prevent coagulation by either removing calcium needed in the clotting process or

by neutralizing the enzyme thrombin which converts fibrinogen to insoluble fibrin.

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Clinical chem lab (anticoagulants and pipettes)

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