Lab Test

Disaccharidase Activity

Test Codes

Mayo: DSAC, EPIC: LAB6522, Beaker: XDISC

Specimen Collection Criteria

Collect: 5.0 mg from a small bowel biopsy in a sterile collection container.

  • Container size should be no longer than 15cc to help keep sample from drying out during transportation.
  • Freeze specimen immediately after collection.

Physician Office/Draw Specimen Preparation

Critical frozen. Freeze (-20°C/-4°F or below) immediately after collection.

Preparation for Courier Transport

Transport: 5.0 mg biopsy specimen, frozen (-20°C/-4°F or below). (Minimum: 5.0 mg)

Rejection Criteria

Specimens not collected and processed as indicated.

In-Lab Processing

Critical frozen. Freeze (-20°C/-4°F or below) immediately after collection.

Transport: 5.0 mg biopsy specimen, frozen (-20°C/-4°F or below). (Minimum: 5.0 mg)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): Unacceptable
Refrigerated (2-8°C or 36-46°F): Unacceptable
Frozen (-20°C/-4°F or below): 28 days


Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions. 

Laboratory

Sent to Mayo Clinic Laboratories in Rochester, MN. Forwarded to Joli Diagnostics, Inc.

Performed

Monday – Friday.
Results available in 5-10 days.

Reference Range

By report.

Test Methodology

Spectrophotometry

Interpretation

By report.

Clinical Utility

This assay aids in the diagnosis of disaccharidase deficiency.  Disaccharidase deficiency is the absence or diminished activity of one or more of the disaccharidase enzymes located in the intestinal mucosa.  This deficient activity gives rise to intolerance toward one or more of the disaccharides when ingested orally, resulting in such symptoms as cramps, diarrhea, nutritional insufficiency, electrolyte imbalance, and acidosis.

CPT Codes

82657

Contacts

Last Updated

9/16/2021

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