CPT (Certified Phlebotomy Technician) Practice Exam

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For a LAVENDER/PINK/PEARL/PURPLE tube, what test is typically run, which anticoagulant is used, and to which lab section is it sent?

  1. Stat chemistry, sodium heparin, chemistry

  2. Coagulation studies, sodium citrate, serology

  3. CBC, EDTA, hematology

  4. Routine chemistry, SST, chemistry

The correct answer is: CBC, EDTA, hematology

The correct answer is C. For a LAVENDER/PINK/PEARL/PURPLE tube, the typical test that is run is a CBC (Complete Blood Count). These tubes contain EDTA as the anticoagulant. Therefore, the tube would be sent to the hematology lab section for analysis. Option A is incorrect because stat chemistry tests are usually run in a green or gray tube with sodium heparin as the anticoagulant. Option B is incorrect because coagulation studies are typically run in a light blue tube with sodium citrate as the anticoagulant. Option D is incorrect because routine chemistry tests are often performed in a gold or red/gray tube with a gel separator (SST - Serum Separator Tube) instead of EDTA.

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