A veterinary organization of pathologists, I believe, has put together a list of 4 findings where any two present in a case of kidney failure results in inclusion of the case as a "confirmed" case. This guideline has enabled us as veterinarians to reliably include a case and report it to the FDA without all of expensive, specialized lab work and special necropsy. The lab test to document crystals in the urine and documented ingestion of the contaminated foods should be able to be performed at any veterinary hospital.
AAVLD advises that cases should meet two of the following four criteria:
1. known exposure to one of the recalled pet foods
2. histologic lesions consistent with crystal-induced tubular nephrosis (pictures are posted on the AAVLD Web site)
3. urinalysis with crystals (also posted on the site) and/or
4. chemical confirmation of the presence of melamine or other marker chemicals in pet food, tissues, or urine.
Doug