In the laboratory: Equipment

Lavender top tubes

  • Contain anticoagulant Ethylendiaminetetraactic acid (EDTA) to prevent clotting.
  • Are used mostly for hematology studies.
  • Must be completely filled to assure a correct anticoagulant to blood ratio.
  • Must be inverted after filling to assure proper mixture of anticoagulant with blood.

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