Phlebotomy Tube Colors And Additives Quizzes, Questions & Answers

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Phlebotomy Tube Colors and Order of Draw Quiz

Phlebotomy Tube Colors And Order Of Draw Quiz

Explore the essential knowledge of phlebotomy tube colors and the correct order of draw in this focused review. Understand the additives in each tube and their impact on tests, enhancing your skills and precision in sample...

Questions: 17 | Attempts: 10 | Last updated: Aug 4, 2025

Sample Question 1
What is the correct order of blood collecting tubes?

Pink, Black, Gray, Red

Yellow, Red, Green, Purple

Green, Lavender, Gray, Light Blue

Sample Question 2
1. What are blood cultures used for?

ADDITIVE: Contains 40ml of liquid broth, green cap for aerobic cultures only.USES: blood to grow culture and diagnose bacteremiaACTION: aerobic for organisms that require oxygen to grow, anaerobic for organisms that grow without oxygen.REQUIREMENTS: follow instructions for multiple samples.***Draw these FIRST to prevent contamination

B. Stool sample collection

A. Urine analysis

C. Liver function tests

Sample Question 3
Light Blue Tube

1. ADDITIVE: EDTA

3. COMMON TESTS: CBC, RBC, WBC, Hemoglobin

2. DEPARTMENT: Hematology

1. ADDITIVE: Sodium (Na) citrate2. DEPARTMENT: Coagulation3. COMMON TESTS: PT, PTT, Pro thrombin time, platelet count4. INVERSION COUNT 3-4 -- if winged blood collection set is used and the coagulation specimen is drawn first a discard tube is recommended to ensure proper ratio