Liumli so sorry. The wise Irishmen on YouTube I just happened upon said don't grieve they are out of pain..focus in the life. He had completely normal blood work 2 years ago so I haven't a clue. Guessing PDD because of his overall condition...losing weight but eating well, unsteadiness. The vet said "slight abnormal levels probably from stress of vet visit"... Like white coat syndrome for people. Thanks everyone.