The Nurse Is Counseling a Patient Whose Lab Tests Include

Multiple Choice

The nurse is counseling a patient whose lab tests include intrinsic factor.The patient's response to which of the following questions should be documented to ensure accurate test results?

A) "Have you been fasting for the past 4 hours?"
B) "Have you had any vitamin B₁₂ in the past 2 days?"
C) "When was your last menstrual cycle?"
D) "What is your current weight?"