SDMA (symmetric dimethylarginine) is an important kidney marker. Newer studies have shown that this biomarker can detect reduced kidney function earlier than traditional markers like creatinine. SDMA is believed to be less sensitive to non-renal conditions than creatinine/UPC. And it is a part of the IRIS CKD staging guidelines as well.
SDMA is not always included in every cat's bloodwork.
Maybe they have lab panels that were created before SDMA was adopted (pre-2010s). Or some other reason. It's worth checking with your vet if they have the capability to include that or if the sample can be sent to IDEXX.
Sources:
Comparison of Serum Concentrations of Symmetric Dimethylarginine and Creatinine as Kidney Function Biomarkers in Cats with Chronic Kidney Disease
SDMA is not always included in every cat's bloodwork.
Maybe they have lab panels that were created before SDMA was adopted (pre-2010s). Or some other reason. It's worth checking with your vet if they have the capability to include that or if the sample can be sent to IDEXX.
Sources:
Comparison of Serum Concentrations of Symmetric Dimethylarginine and Creatinine as Kidney Function Biomarkers in Cats with Chronic Kidney Disease