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APPAS
PERIODIC ACID-SCHIFF (PAS) HISTOCHEMICAL STAIN

Test Code APPAS 
Test PERIODIC ACID-SCHIFF (PAS) HISTOCHEMICAL STAIN 
Description Stain to demonstrate substances in tissue such as basement membranes, glycogen, mucin, pituitary basophil granules, and reticulum. Also useful for microorganisms such as Histoplasma capsulatum.

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) 88313