Mini Gastrin I, human, is primarily used in research settings to study gastrointestinal physiology and hormone interactions. It plays a role in stimulating gastric acid secretion, making it valuable for investigating conditions like peptic ulcers and acid-related disorders. Researchers also use it to explore its effects on gastric mucosal growth and its potential role in digestive health. Additionally, it serves as a tool in pharmacological studies to develop and test drugs targeting gastrin receptors. Its applications extend to understanding the mechanisms of hormone regulation in the digestive system and its implications in diseases such as Zollinger-Ellison syndrome.