DISACCHARIDASES

Specimen Required
Place 5 mg (2mg minimum) of small bowel biopsy in a 2ml cryovial polypropylene screw-cap tube. Freeze within 2 hours of collection at -20°C.

Rejection Criteria
Samples frozen later than 2 hours after collection; Samples received in urine containers; Samples in colorless fluid; Samples on gauze, filter paper or any other type of support media.

Methodology
Spectrophotometry (SP)

Stability
Room temperature: Unacceptable; Refrigerated: Unacceptable; Frozen: 31 days

Reference Range
Lactose   15.0-45.5 uM/min/g prot  
Sucrase   25.0-69.9 uM/min/g prot  
Maltase   100.0-224.4 uM/min/g prot  
Palatinase   5.0-26.3   uM/min/g prot  

Performed
Sunday-Thursday

Turnaround Time3-5 days
Test CodeDISAC
CPT-4 Code (s)
82657 x 4
LOINC Codes
Lactase   1942-2  
Sucrase   14178-8  
Maltase   1815-0  
Palatinase   14168-9  

Warde
Medical
Laboratory