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Test and Tubes Database
ID:428 Disaccharidases
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DescriptionMeasurement of the activity of small bowel mucosal disaccharidase enzymes (lactase, maltase, sucrase) from duodenal or jejunal biopsy tissue.
Indication Investigation of malabsorption due to disaccharidase deficiency
Additional InfoSample - Duodenal or jejunal biopsy. Minimum volume 5 mg. Snap freeze on dry ice. Please return dry ice box with sample to the main biochemistry lab, not the sort room.
Concurrent Testsna
Dietary Requirementsna


Ref. Range (Male)
Ref. Range (Female)
Ref. Range (Paed)
Ref. Range NotesLactase 6 - 55 U/g protein Maltase 130 - 456 U/g protein Sucrase 30 - 152 Reference ranges are applicable to jejunal biopsies, assuming sample was frozen at -20 C. Duodenal samples will have lower enzyme activities.

IP Acute TAT3 weeks
IP Routine TAT3 weeks
GP Acute TAT3 weeks
GP Routine TAT3 weeks
Turnround CommentReferred to Paediatric Biochemistry at Manchester Royal Infirmary.
Originally edited by : EM. Last edited on 17/07/2020 13:09:39. Published By EM on 17/07/2019 13:09:39.