ACT test Flashcards
1
Q
Why is the ACT performed?
A
Screening test for bleeding disorders
2
Q
What does the acronym ACT mean?
A
Activated Coagulation Time
3
Q
What substance is contained in the ACT tube? Why is it used?
A
Kaolin; it is the surface activator and does not interfere with normal clotting
4
Q
How much blood is needed to perform the ACT?
A
2 mL
5
Q
How should the blood be drawn that is to be used to perform the ACT?
A
- Do a venipuncture (preferably jugular) with the vacutainer system and collect 1-2 ml of blood in a tube. (This flushes the system of any tissue thromboplastins)
- Replace the plain tube with the preheated ACT tube and collect 2 ml of blood
6
Q
When should the timing start for the clotting?
A
Timing should start when the blood first contacts the kaolin
7
Q
How is the ACT calculated?
A
The ACT time is the difference between the first contact with the kaolin and the first signs of clotting
8
Q
What is the normal ACT for dogs and cats
A
dogs: 90-120 sec
cats: 60-90 sec
