Normal Limits for Gastric Retention
| Time point | Lower limit (a lower value suggests abnormally rapid gastric emptying) | Upper limit (a greater value suggests abnormally delayed gastric emptying) |
|---|---|---|
| 0.5 h | 70% | |
| 1.0 h | 30% | 90% |
| 2.0 h | 60% | |
| 3.0 h | 30% | |
| 4.0 h | 10% |
Data are from Am J Gastroenterol. 2007;102:1–11.