- Test Name
- Chromogranin A
- Aliases
- Provincial Mnemonic
- CHRA
- LOINC Test Code
- 9811-1
- Description and Primary Use
- Used to monitor patients with carcinoid tumors and as an adjunct to diagnose carcinoid and other neuroendocrine tumors, such as pheochromocytomas and medullary thyroid carcinomas. May be elevated in prostate adenocarcinoma.
- Reorder interval
- N/A
- TAT
- 15 Days
- Test Cost
- $65.00
- Tier
- 2 - Conditional/Restricted Access (See Ordering Requirements)
- Ordering Requirements (Restrictions / Conditions)
Approval requires test order:
- By Endocrinologist
- By Internal Medicine; or
- Completed LTSA Form.
Enter test name (and/or Provincial Mnemonic) into Test(s) to be performed section on the LTSA Form. Direct questions on how to order test to Specimen Dispatch (709-777-2373).
- Required Consultations
- N/A
- Algorithms and Guidelines
N/A
- Special Patient Preparation
Medications that stimulate secretion of neuroendocrine cells can lead to significant elevations of chromogranin A. Discontinue proton pump inhibitors (PPIs) for 2 weeks prior to testing. H2-receptor antagonists can be used at modest doses.
- Special Collection / Transport / Processing Requirements
Freeze as soon as possible.
- Criteria for Rejection
Please see Special Collection/Transport/Processing requirements reject if these are not met.
- Laboratory Service Area
- Clinical Chemistry
- Performing Laboratory / Site
- Referred out of province
- Last Updated
- 17-May-19