Order of Draw

Question 1

Culture Tubes (1)

Answer 1

Sterile procedure (contain growth medium and anticoagulant)

Question 2

Light Blue Tubes (2)

Answer 2

Coagulation studies (contain anticoagulant sodium citrate)

Question 3

Red/Tiger Tubes (3)

Answer 3

Serum studies (with or without clot activator or gel serum separator)

Question 4

Green Tubes (4)

Answer 4

Collect blood for plasma determination, such as chemistry tests, hematology tests and virology tests (contain heparin)

Question 5

Lavender Tubes (5)

Answer 5

Hematology tests, like complete blood count and blood typing (contain EDTA)

Question 6

Pink Tubes (6)

Answer 6

Used for blood type screening, crossmatching, antibody identification, and HIV viral load tests (contain EDTA)

Question 7

Gray Tubes (7)

Answer 7

Glucose and lactate testing (contains potassium oxalate/sodium fluoride)

Question 8

Yellow Tubes (8)

Answer 8

Blood banking, biochemistry, immunology, and blood cultures (contains acid citrate dextrose [ACD], sodium polyanethol sulfonate [SPS], silica and separation gel)

Question 9

Royal Blue Tubes (9)

Answer 9

Trace metal serum determinations (no additive). Order of Draw determined by Standard Operating Procedures at place of work, so it may not be last.