Mutations of this renal urate transporter cause hypouricemia by hyperuricuria, which results in urate kidney stones.
| 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 | 15 days | |
| Specimen type | genomic DNA |