TUBES
What color tube is most used for coagulation?
BLUE TUBE
Sodium Citrate
What test is commonly collected in a lavender tube?
CBC
Which collection comes first?
Blood cultures
What is the Order of Draw?
The specific sequence used to collect blood into different tubes.
What color tube is commonly used for a CBC?
LAVENDAR TUBE
What additive is found in a lavender tube?
EDTA
What test can be performed using a light blue tube?
PT/INR
Which tube comes after blood cultures?
Light blue
Why do phlebotomists follow the Order of Draw?
To prevent additive carryover and contamination.
What color tube is commonly used for glucose testing?
Gray
What additive is commonly found in a green tube?
Heparin
What type of testing is commonly performed using a green tube?
Plasma chemistry
Which tubes generally come after serum tubes?
Green
What could happen if the wrong order is used?
Test results could be inaccurate.
What color tube contains heparin?
Green
What additives are commonly found in a gray tube?
Sodium fluoride and potassium oxalate
What test is commonly associated with the gray tube?
Glucose
Which comes first: lavender or gray?
Lavender
Why can't you simply draw the tubes in any order?
Different tubes contain different additives that can affect other specimens.
What color tube is commonly used for blood type crossmatch?
Pink
What is the main purpose of additives in blood collection tubes?
To preserve or prepare the blood specimen for specific testing
What type of specimen is collected in blood culture bottles?
Blood for microbiological culture
Put these in the correct order: Gray, Green, Light Blue, Lavender, Blood Culture, Serum.
→ Blood Culture → Light Blue → Serum → Green → Lavender → Gray
Explain why additive carryover is a problem.
An additive from one tube can enter another tube and interfere with the patient's test results.