text_1: 19-year-old thin Type 1 diabetic inpatient with severe episodes of right upper quadrant pain.  Normal ultrasound and upper endoscopy but her HIDA (hydroxyiminodiacetic acid) scan showed "barely visible gallbladder" and poor "ejection fraction."  The question is what to do with this HIDA (hydroxyiminodiacetic acid) scan result.  Could being NPO (nothing by mouth) affect the HIDA (hydroxyiminodiacetic acid) scan results?
text_2: Could fasting or narcotics affect the HIDA (hydroxyiminodiacetic acid) scan?