Parameter
| Biomarker | GAS | Full name | Gastrin | Molecular Type | Hormones |
|---|---|---|---|---|---|
| Molecular Formula | Macromolecule | Molecular Weight | / | Core Functional Dimensions | Diagnosis, Monitoring |
| Disease | Pancreatic Neuroendocrine Tumors | Disease Subtypes | / | ||
| Organ | Pancreas | Test Sample / Technology Platform | Serum (immunoassay) | ||
| Pathobiological Mechanisms | G cell-derived tumor secretion, causing Zolie-Ellison syndrome (high gastric acid, peptic ulcer) | ||||
| Clinical Availability Status | High clinical specificity: serum level ≥300pg/mL suggests gastrinoma, and patients with MEN1 syndrome should be preferentially screened | ||||
| Notes and Dynamics | The diagnostic sensitivity can be improved when combined with CgA | ||||