NOT Cushing's Disease

We got Bentley's test result back from Tuesday, and Bentley Boy was able to suppress his cortisone out put at the four hour and eight hour time intervals after he received the injection of simulated cortisol.  Although the test is sometimes false negative, we are ruling Cushing's Disease out for now.  Diabetes Insipidus http://www.surroundedbycats.com/di-whatisit.html is suspected now, but before a diagnosis is made, further testing to rule out kidney or liver problems will be done.  We won't know more about further testing until sometime next week.   I brought in another urine sample today from his morning pee, and the result came back diluted.  Diluted means his body isn't able to recycle his water as well as it should, so dehydration is a risk if water isn't always available for him.  I will post more as we know more.  Thanks so much for all of the concern expressed by those who know our Bentley.  B Boy is a special dog!