Important Note

Assay aids in monitoring but is not recommended for diagnosis of carcinoid tumors.  Assay may be useful in monitoring nonsecretory sympathetic and parasympathetic neuroendocrine tumors.

BRAHMS CGA II Kryptor kit is used.  Results obtained with different assay methods or kits cannot be used interchangeable.  Results cannot be interpreted as absolute evidence of presence or absence of malignant disease.

Non-tumor related elevations of Chromogranin-A can be observed in gastrointestinal, cardiovascular, and renal disorders, as well as with proton pump inhibitor therapy.