Proper Specimen Collection for Coagulation Testing Must Be Performed to Eliminate

Multiple Choice

Proper specimen collection for coagulation testing must be performed to eliminate contamination of substances that will interfere with the test results. Which of the following are considered contaminants for coagulation testing?

A) Sodium citrate and heparin anticoagulant
B) Tissue factor and anticoagulant carryover
C) Air and tissue factor
D) High hematocrit and anticoagulant carryover