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APAAT
ALPHA-1-ANTITRYPSIN (AAT) IMMUNOHISTOCHEMISTRY STAIN

Test Code APAAT 
Test ALPHA-1-ANTITRYPSIN (AAT) IMMUNOHISTOCHEMISTRY STAIN 
Description Useful for staining the hepatocytes of patients with AAT deficiency; is a marker for malignant hepatic neoplasms and in endodermal sinus tumors.

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