Diagnostic finding

Elevated Chromogranin A

Increased serum or plasma concentration of chromogranin A (CgA), a neuroendocrine secretory granule protein (normal range: approximately 20-225 ng/mL or <60 pmol/L), reflecting increased neuroendocrine cell activity, tumor secretion, or non-neoplastic stimulation of enterochromaffin-like cells.

Causes

  • Neuroendocrine neoplasms

    • Gastroenteropancreatic neuroendocrine tumors

    • Carcinoid tumors

  • Medications

    • Proton pump inhibitors (PPIs)

    • Hâ‚‚ receptor blockers

  • Gastrointestinal disorders

    • Chronic atrophic gastritis

    • Helicobacter pylori infection

    • Inflammatory bowel disease (IBD)

  • Liver failure/hepatitis/cirrhosis

  • Renal failure

  • Heart failure

  • Hypertension

  • Hyperthyroidism

  • Hyperparathyroidism

  • Rheumatoid arthritis

Also known as: Elevated CgA, High CgA, High Chromogranin A, Increased CgA, Increased Chromogranin A

Referencing diagnoses

Note: Lists existing diagnoses in Diagnotize only.