CPT (Certified Phlebotomy Technician) Practice Exam

Question: 1 / 400

What color tube(s) contain EDTA?

Clear, yellow, red

Green, gray

Blue, white

Pink, purple, lavender, pearl

The correct choice is the one that identifies the color tubes containing EDTA, which is an anticoagulant commonly used in laboratory settings. Tubes that contain EDTA are generally used for hematological tests, blood smears, and certain types of biochemical tests.

The pink, purple, lavender, and pearl color tubes all contain EDTA, making them suitable for various tests that require whole blood or plasma where it’s essential to prevent coagulation. EDTA works by binding calcium in the blood, which is critical for the coagulation process, effectively keeping the sample in a liquid state for accurate testing.

Identifying the correct tubes is important for phlebotomists to ensure proper collection and handling of blood specimens. This ensures that laboratory results are accurate and reliable, which is a core part of providing effective medical care.

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