Question

The medical assistant is to collect a Prothrombine time (PT) test, a complete Blood Count (CBC), and a fasting Blood Sugar (FBS). What is the correct order of draw?

A. Grey ( FBS), Lavender (PT), Red (CBC)
B. Light-blue (PT), Lavender (CBC), Grey (FBS)
C. Lavender (FBS), Red (CBC), Green (PT)
D. Grey (FBS), Lavender (CBC), Light-blue (PT)

Answer 1

The correct order of draw for the given tests is: Light-blue (PT), Lavender (CBC), Grey (FBS). Following this order ensures accurate test results and prevents cross-contamination.

Step-by-step explanation:

The correct order of draw for the given tests is: Light-blue (PT), Lavender (CBC), Grey (FBS). This order is based on the requirements of the tests and the type of blood tubes used for each test. The PT test requires a light-blue top tube, which contains sodium citrate as an anticoagulant. The CBC test requires a lavender top tube, which contains EDTA as an anticoagulant. The FBS test requires a grey top tube, which contains a potassium oxalate and sodium fluoride mixture as an anticoagulant. Following this correct order of draw ensures accurate test results and prevents cross-contamination between different substances.