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Disaccharidase in Tissue
Ordering Recommendation
Evaluate carbohydrate malabsorption due to disaccharidase deficiency.
New York DOH Approval Status
Specimen Required
Biopsies of small bowel by endoscopy.
Place two 5 mg biopsies of tissue on the wall of a small, tightly-capped plastic tube without any supporting media or an ARUP Standard Transport Tube and freeze within 2 hours of collection. (Min: 2 (two) 5 mg biopsies)
Frozen. Ship on dry ice.
Specimens placed on gauze, filter paper, or any other type of support media. Tissue preserved in formalin.
Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 6 months
Methodology
Quantitative Spectrophotometry
Performed
Mon, Wed, Fri
Reported
1-6 days
Reference Interval
| Component | Reference Interval |
|---|---|
| Lactase | Greater than or equal to 10.0 µmol/min/g protein |
| Maltase | Greater than or equal to 100.0 µmol/min/g protein |
| Palatinase | Greater than or equal to 9.0 µmol/min/g protein |
| Sucrase | Greater than or equal to 25.0 µmol/min/g protein |
Interpretive Data
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
Note
Hotline History
CPT Codes
82657
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 2002249 | Sucrase | 14178-8 |
| 2002251 | Lactase | 1942-2 |
| 2002253 | Palatinase | 14168-9 |
| 2002255 | Maltase | 29640-0 |
| 2002487 | Disaccharidase Interpretation | 57779-1 |
Aliases
- Isomaltase
- Lactase
- Maltase
- Palatinase
- Sucrase
