Do blood transfusions interfere with the test?

Do blood transfusions interfere with the test?

Whole blood transfusions that contain white blood cells may interfere with the OncoK9 test. Patients that have received a whole blood transfusion need to wait 3 months before having an OncoK9 test performed. 


Patients who have been transfused only with packed red blood cell products can have an OncoK9 test performed without any waiting period.