IDEXX Reference Laboratories

Cat sitting on windowsill.


A new method for managing and monitoring phosphorous overload in chronic kidney disease—now included in IRIS treatment recommendations for CKD in cats.

Early detection of phosphorous overload and metabolic bone disease in cats with IRIS CKD Stage 1 and Stage 21,2

Enables confident treatment recommendations, such as introducing a phosphate-restrictive diet

Enhanced view of a patient's kidney health — as an addition to IDEXX's suite of kidney health diagnostics, including the IDEXX SDMA Test

Contact us


  1. Geddes RF, Elliott J, Syme HM.  Relationship between Plasma Fibroblast Growth Factor-23 concentration and Survival Time in Cats with Chronic Kidney Disease.  J Vet Intern Med. 2015;29:1494-1501.
  2. Finch NC, Geddes RF, Syme HM, Elliott J.  Fibroblast Growth Factor 23 (FGF-23) Concentrations in Cats with Early Nonazotemic Chronic Kidney Disease (CKD) and in Health Geriatric Cats.  J Vet Intern Med.  2013;27:227-233