Phlebotomy Tubes, Additives, and Tests

A red top tube contains...

• Nothing

• EDTA

• Potassium oxalate

• Sodium citrate

What color tube is used to draw a CBC?

• Red

• Green

• Lavender

• Light blue

What color tube is used to draw a Prothrombin Time

• Red

• Green

• Lavender

• Light blue

Which of the following represents the correct order of draw?

• Red, green, lavender, gray

• Red , lavender, green gray

• Lavender, red, gray, green

• Red, gray, green, lavender

Lavender-top tubes are most commonly used to collect:

• chemistry tests

• coagulation specimens

• hematology tests

• immunology tests

Of the following tubes or containers, which is filled last in the recommended order of draw?

• Blood culture bottle

• Lavender top

• Light-blue top

• Red top

Which of these tubes will be drawn first?

• SST

• Green

• Light blue

• Blood cultures

Which of these tubes will you draw first?

• Green

• Gray

• Lavender

• SST

What are the potential consequences of not following the correct order of draw in phlebotomy?

• Increased accuracy of test results

• Decreased risk of patient misdiagnosis

• Reduced chance of cross-contamination

• Potential consequences include cross-contamination of blood samples, inaccurate test results, and patient misdiagnosis.

What does plasma contain that differs from serum?

• Fibrinogen

• A buffy coat

• RBCs

• A clot

• WBCs