Methodology
Spectrophotometry (SP)
Specimen Type
Tissue
Performing Lab
Quest Diagnostics Valencia
Epic ID
LAB07724
Lab Test Days
Sunday-Thursday
Standard TAT
3-5 Days
Collection Information
Specimen Required
2-5 mg frozen small bowel biopsy collected in a 2 mL cryovial polypropylene screw-cap tube
Container Type
Sterile Container
Collection Instructions
Place 5 mg (2 mg) small bowel biopsy on the interior surface of a 2 mL polypropylene screw-cap cryovial or small polypropylene collection tube. Freeze within 2 hours of collection at -20?C.
Processing Information - Lab Use Only
Transport Temperature
Frozen-Only
Specimen Stability
Room Temp: Unacceptable; Refrigerated:Unacceptable; Frozen: 31 Days
Rejection Criteria
Received room temperature; Received refrigerated; Samples frozen later than 2 hours post-collection; Samples received in urine containers; Samples in colorless fluid (water, formalin, saline); Samples on gauze, filter paper or any support media
Test Volume Required
5 mg Biopsy
Minimum Test Volume
2 mg Biopsy
Included Tests
Lactase, Sucrase, Maltase, and Palatinase
Comments
Lactase, maltase, palatinase and sucrase are mucosal disaccharidases that are present in normal small intestine and fetal colon. A decrease in the enzyme activity of these disaccharidases has been noted in colonic adenomas, adenocarcinomas and malabsorption. Decreased disaccharidase activity is a good indication of mucosal injury with the exception of lactase.
CPT Codes
82657 (x4)
Revised
07-29-16
Initials
SL