|Test||CHROMOGRANIN, IMMUNOHISTOCHEMISTRY STAIN|
|Description||Chromogranin is present in a wide variety of endocrine tissues including the pituitary, pancreas, hypothalamus, thymus, thyroid, intestine and parathyroid. Neuorendocrine cells exhibit a fine granular staining pattern, since chromogranin is present in the secretory granules of these cells. This antibody is used to identify neoplasms of neuroendocrine lineage, in conjunction with other markers. Occasionally, stromal elements surrounding heavily stained tissue and/or cells will show immunoreactivity.
NOTE: This test is usually ordered in conjunction with a pathology consultation. The pathology professional component will be billed separately by the consulting pathologist.
|Specimen||Formalin-fixed or paraffin-embedded tissue specimen.|
|Reference Values||An interpretive report will be issued.|
|Analytic Time||2 Days|
|Day(s) Test Set Up||Monday through Friday|