Answer :
Heparin is used in a capillary tube during a hematocrit to prevent blood clotting and obtain accurate results.
Heparin is an anticoagulant that is used in a capillary tube when performing a hematocrit to prevent blood clotting.
During a hematocrit, blood is collected into a capillary tube by capillary action, and then it is centrifuged to separate the different components of blood.
Heparin is added to the tube to prevent the formation of clots during this process, ensuring accurate results.
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