Question

A phlebotomy technician should select a tube that has which of the following anticoagulants to collect a sample for a PT/PTT test ?

A. EDTA
B. Sodium citrate
C. Potassium oxalate
D. Heparin

Answer 1

Sodium citrate is the correct anticoagulant for a PT/PTT test as it prevents the blood from clotting by binding to calcium ions.

Step-by-step explanation:

The correct anticoagulant to select for a PT/PTT test is Sodium citrate.

Sodium citrate is commonly used as an anticoagulant for coagulation tests because it binds to calcium ions, preventing the blood from clotting.

Other options, such as EDTA, Potassium oxalate, and Heparin, are used for different purposes and not suitable for PT/PTT tests.