"The International Renal Interest Society (IRIS) Chronic Kidney Disease (CKD) Staging Guidelines now include SDMA (symmetric dimethylarginine). SDMA has been recognized by IRIS, a multinational board of 15 independent veterinarians with particular interest in veterinary nephrology, as a valuable tool to help detect dogs and cats with IRIS CKD Stage 1 disease and to help correctly stage chronic kidney disease (CKD) in underweight patients. "