In the laboratory: Equipment

Blood collection tubes: types

  • Rubber stoppers of blood collection tubes are color coded.
  • Each type of stopper indicates a different chemical additive (usually an anticoagulant to prevent clotting), or a different tube type.

Earn ASCLS P.A.C.E.® credits for your state clinical laboratory personnel license. Visit LabCE.com for laboratory continuing education.

Phlebotomy course details »

Learn more about laboratory continuing education for ASCP, AMT, NCA, and state renewal and recertification requirements »

Get information on laboratory safety and compliance courses for clinical and medical laboratories »