Phlebotomy Color Coding Quiz

What is the primary purpose of the lavender-top tube in phlebotomy?

• To collect blood for glucose testing

• To collect blood for complete blood count (CBC)

• To collect blood for coagulation studies

• To collect blood for blood cultures

In the order of draw, which tube should be filled first?

• Red-top tube

• Green-top tube

• Light blue-top tube

• Yellow-top tube

Which of the following tests is commonly associated with the green-top tube?

• Blood glucose

• Electrolyte panel

• Blood culture

• Hemoglobin A1c

What is the significance of the order of draw in phlebotomy?

• To ensure the correct volume of blood is collected

• To prevent cross-contamination between additives

• To minimize patient discomfort

• To reduce the time taken for blood collection

Which color tube is typically used for coagulation studies?

• Red

• Lavender

• Light blue

• Green

What is the main additive in a red-top tube?

• EDTA

• Sodium citrate

• Heparin

• No additive (serum tube)

Which safety protocol is essential to follow when performing phlebotomy?

• Wearing a lab coat

• Using a new needle for each patient

• Labeling tubes after leaving the patient's room

• Disposing of gloves in regular trash

What is the primary use of a gray-top tube in phlebotomy?

• Blood culture

• Glucose testing

• Complete blood count

• Coagulation studies

Why is it important to invert tubes after blood collection?

• To mix the blood with the additive

• To prevent hemolysis

• To increase the speed of clotting

• To reduce air bubbles

Which tube color is typically used for blood cultures?

• Yellow

• Red

• Lavender

• Gray