The gene encodes a hight-affinity sodium glucose transporter found in kidneys and intestinal. Loss of function mutations result in an autosomal recessive disorder characterized by malabsorption of glucose and galactose.
| Clinic | Method | Carrier testing |
| Turnaround | 5 days | |
| Specimen type | genomic DNA |
| Clinic | Method | Massive parallel sequencing |
| Turnaround | 25 days | |
| Specimen type | genomic DNA |
| Clinic | Method | Genomic sequencing of the entire coding region |
| Turnaround | 25 days | |
| Specimen type | genomic DNA |