A Patient with Pernicious Anemia Has a Laboratory Order to Test

Multiple Choice

A patient with pernicious anemia has a laboratory order to test for intrinsic factor (IF) antibodies.A nurse scheduling this test should instruct the patient to:

A) Begin a bowel prep 24 hours prior to the examination.
B) Eliminate red meat from the diet for 72 hours before the test.
C) Take nothing by mouth for 12 hours before the test is scheduled.
D) Withhold vitamin B₁₂ for 48 hours before the test is scheduled.