This ELISA (enzyme-linked immunosorbent assay) kit is intended for the quantitative determination of human chromogranin A levels in EDTA-plasma and serum samples. For Research Use Only. Not for use in diagnostic procedures. Available outside of the United States.
This product is not available in the United States. See Chromogranin A (CgA) ELISA, catalog 79-30215097, available for purchase in the United States only.
Chromogranin
A is a 49 kDa acidic protein that consists of 439 amino acids encoded on
chromosome 14. Chromogranin A has been identified in several normal and
neoplastic endocrine tissues. It is demonstrated that an elevated level of
circulating chromogranin A is a marker for tumors of neuroendocrine origin. This assay has shown that it did not exhibit any high
dose “hook” effect up to 1,000,000 ng/mL. This is essential because some
subjects with pheochromocytoma had over 300,000 ng/mL of chromogranin A level
in the serum sample.
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