Additives & Draw Order Flashcards
What additive is in the LAVENDER
EDTA
What additive is in the RED CLAY
None
What additive is in the GOLD
Clot activator and gel for serum separation
What additive is in the LIGHT BLUE
Sodium Citrate
What additive is in the GREEN
Heparin
What additive is in the RED PLASTIC
Clot activator
What additive is in the YELLOW
SPS or ACD
What additive is in the GREY
Sodium fluoride/potassium oxalate
What additive is in the BLOOD CULTURE BOTTLE
Broth
What is EDTA
An anticoagulant
How does EDTA work
By binding (or chelating) calcium
What are the two forms of EDTA
K2- powdered form
K3- liquid form
What tests is EDTA used for
Whole blood for hematology tests, it preserves cell morphology and aggregation
What does Sodium Citrate do
Prevents coagulation
How does Sodium Citrate work
By binging calcium
What test is Sodium Citrate commonly used for
Coagulation tests, it does the best job at preserving coagulation factors
What does Heparin do
It prevents clotting
How does Heparin work
By inhibiting thrombin formation
What is thrombin and how does it assist clotting
Thrombin is an enzyme that converts fibrinogen into fibrin
necessary for clot formation
What tests use Heparin
In STAT tests and other rapid response situations where a fast chemistry result is needed
What are the three Heparin formulations
Ammonium
Lithium
Sodium heparin
