It is best to mix a blood specimen in an additive tube 60 minutes after the venipuncture has occurred.

Name: It is best to mix a blood specimen in an additive tube 60 minutes after the venipuncture has occurred.
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Quizplus · Accepted Answer

Blood specimens in additive tubes should be mixed immediately after collection to ensure proper mixing of the blood with the additive, preventing clotting or inadequate anticoagulation. Waiting 60 minutes could compromise the integrity of the sample.

It Is Best to Mix a Blood Specimen in an Additive