Blood bottles Flashcards
What type of blood sample does a purple bottle use?
Whole blood
What common tests does the purple bottle allow for?
FBC
Blood film
Red cell folate
What bottles contain EDTA as an addative?
Purple
Pink
What does EDTA do?
Acts as an anticoagulant which binds to the calcium within the blood
What samples of blood do pink bottles take?
Whole samples being sent to a transfusion lab
What tests are pink bottles commonly used for?
Group and save
crossmatching
What are blue bottles commonly used to test?
The clotting system, so for tests such as bleeding time ,prothrombin time ect
What additive is used for the Blue bottle
Sodium cirtrate
What is the function of sodium citrate as an addative?
Reversible anticoagulant by binding to calcium ions disrupting clotting cascade
What is the gold bottle used for?
Typically used for Urea and electrolytes/liver studies
What additives does the gold bottle use?
Silica particles
Serum seperator
How does the serum seperator additive work?
Polymer gel layer which floats between the blood cells and plasma allowing for easy removal of serum
What does the silica particle addative do?
Work together to acticate clotting causing blood cells to clump together
What are dark green bottles typically used to measure?
Ammonia levels/insulin
What additives do the dark green bottles use?
Sodium heparin which acts as an anticoagulant
