SLC13A1 and hypersulfaturia: Nonetheless, of six dogs assayed, the affected dog had the highest excretion levels, and there was preliminary evidence of hypersulfaturia resulting from deletion of SLC13A1. The mean urinary sulfate levels in dogs with at least one copy of Δslc13a1 were elevated relative to the mean level in wildtype Miniature Poodles (p = 0.02; Table S3).