Disaccharidase Analysis
Label Mnemonic: DISAC
Epic Lab Code: LAB5822
Downtime Form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Commercial Mail-out Laboratory
5231 RCP
Small Bowel
Specimen Instructions:
Approximately 5 mg of small bowel should be collected through endoscopy for the complete enzyme analysis.

The tissue should be placed on the wall of a small, tightly capped, plastic tube appropriately labeled with the patient name, date of birth, ID number, date specimen collected and referring physician name. A 1.5 mL microtube works well. PLEASE DO NOT PLACE THE TISSUE ON GAUZE, FILTER PAPER, OR USE ANY TYPE OF SUPPORT MEDIUM. Freeze plastic tube immediately.
Collection Medium:
Miscellaneous container; contact laboratory
5 mg of small bowel
Turn Around Time:
3 days upon receipt at reference laboratory
Reference Range:
          Units = uM/min/gram protein      Abnormal Range
Lactase            16.5 - 32.5                 < 15.0
Sucrase            25.0 - 79.8                 < 25.0
Maltase           100.0 - 223.6               < 100.0
Palatinase          5.0 - 17.6                  < 5.0
This mailout test requires pathologist approval for orders during inpatient encounters. Mailouts staff will not process order without approval. The pathologist covering mailouts approval can be reached at pager #5379. If approval is given, the name of the pathologist can be selected in the drop-down menu to the right of the approval warning in Epic when ordering the test.

Determination of disaccharidase activities plays an important role in the diagnosis of patients suffering with chronic diarrhea, abdominal pain, or failure to thrive.

Please print, complete and submit the Request Form from JOLI Diagnostics to the lab, with the specimen and the A-1a Miscellaneous Request.
Clinical Chemistry through Spectrophotometry
CPT Code:
82657 (x4)