Fasting: <100 pg/mL; SI units: 47.7 pmol/L
Postprandial: 95–140 pg/mL; SI units: 45.3–66.7 pmol/L
. Red-top tube.
■ Hormone that stimulates secretion of gastric acid.
■ Elevated in pernicious anemia, Zollinger-Ellison syndrome,
stomach cancer, peptic ulcer, atrophic gastritis, renal
insufficiency, steroid administration, H2 blockers.
