Glucose (A), active glucagon-like peptide 1 (GLP-1) (B), insulin (C), total GIP (D), total peptide YY (PYY) (E), and pancreatic polypeptide (PP) (F) responses in the single asymptomatic patient during mixed meal testing orally via the RYGB anatomy (black solid line and closed circle), via G-tube (black dashed line and closed triangle) and orally after reversal (gray solid line and open circle).