Standard Protocol Guidelines for Patient Preparation, Meal, and Radiolabeling of Meal
| Category | Variable | Definition |
|---|---|---|
| Patient preparation | Withheld medications | Prokinetic agents: metoclopramide, tegaserod (Zelnorm; Alfasigma USA), domperidone, erythromycin, and cisapride; opiates; anticholinergic and antispasmodic agents; atropine, nifedipine, progesterone, octreotide, theophylline, benzodiazepine, and phentolamine |
| Withholding time | 2 d | |
| Blood glucose testing | Measurement of level before GES and inclusion in final report | |
| Meal | Consensus meal* | 118 mL (4 oz) of liquid egg whites, 120 mL of water, 2 slices of toast, 30 g of jam or jelly |
| Meal ingestion time | <10 min | |
| Radiolabeling of meal | Radiopharmaceutical | 99mTc-SC |
| Radiopharmaceutical dose | 18.5–37 MBq (0.5–1.0 mCi) | |
| Radiolabeling method | Mixing of 99mTc-SC with liquid egg whites before cooking |
↵* All 4 listed ingredients and no other ingredients (e.g., no butter or juice).