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APSYNAP
SYNAPTOPHYSIN, IMMUNOHISTOCHEMISTRY STAIN

Test Code APSYNAP 
Test SYNAPTOPHYSIN, IMMUNOHISTOCHEMISTRY STAIN 
Description In neoplasms with endocrine differentiation, synaptophysin and chromogranin have been found to be the most useful due to their broad spectrum sensitivity and preservation in conventional paraffin-embedding processing. Either or both markers may be employed, when recognition of a process of an endocrine nature is important in the differential diagnosis.

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 
CPT Code(s) 88342