Tube Additives

Question 1

What does a red tube do?

Answer 1

clot activator

Question 2

What is the additive in a green tube?

Answer 2

lithium heparin

Question 3

What is the additive in a light blue tube?

Answer 3

sodium citrate

Question 4

What is the additive in a tiger top?

Answer 4

sst (serum separator tube)

Question 5

What is the additive in a purple tube?

Answer 5

EDTA

Question 6

What is the additive in a royal blue top tube

Answer 6

sodium EDTA

Question 7

What is the additive in a grey top tube?

Answer 7

sodium fluoride

Question 8

Which test requires a tan tube?

Answer 8

Lead

Question 9

What are the colors of the chemistry tubes?

Answer 9

red, green, tiger top

Question 10

Color of hematology tube?

Answer 10

purple/ lavender

Question 11

Color of coagulation tube?

Answer 11

light blue

Question 12

What does an SST tube do?

Answer 12

contains a gel at the bottom to separate blood cells from serum on centrifugation

Question 13

What is the function of lithium heparin?

Answer 13

activates antithrombins, thus blocking the coagulation cascade of the blood sample.

Question 14

What does sodium citrate do?

Answer 14

an anticoagulant to stabilize blood and blood products

Question 15

What does EDTA do?

Answer 15

It inhibits clotting by removing or chelating calcium from the blood.

Question 16

What is the difference between the anticoagulants EDTA and sodium citrate?

Answer 16

EDTA anticoagulation is used for blood counts; sodium citrate is used for coagulation testing and for the erythrocyte sedimentation rate