The published normal values are 13. Where would these results rate. What Is Gastric Emptying Study Example Health Maintain Less than or equal to 60 meal retention. Interpreting gastric emptying study results . For example if results appear as follows percent gastric emptying was 13 34 48 and 71 at 1 2 3 and 4 hours post-ingestion respectively this means that there is. Greater than or equal to 70 meal retention. Dynamic imaging from the left anterior oblique projection over 90 minutes shows markedly delayed gastric emptying. Less than or equal to 10 meal retention. GASTRIC EMPTYING STUDY Tc-99m-Sulfur Colloid Overview The Gastric Emptying Study demonstrates the movement of an ingested bolus of solid andor liquid from the stomach into the small intestine. The results from my gastric emptying study shows 1-hour retention of 62 percent which is below the normal threshold of 90 percent 2-hour retention of 24 percent below the normal threshold of 60 percent and 3-hour retention ...