IMHO, if you take her off all "life support" and she goes down hill, then as sad as it is she should be euthanized because she can't make it on her own.
Can you explain to me (just curious) what in her test results indicates there is no hope for her recovery? (I'm not a vet, so please explain it taking that into consideration.)
Blood work is not used solely to predict an animals fate, and this website explains why ...
http://www.anapsid.org/labtests.html
You have to take into consideration all aspects to determine what is actually going on with reptiles. If there is an "abnormality" in the basic profile, further tests need to be done, for example if a person's cortisol levels are not within range, a more in-depth ACTH stim test is done to assess adrenal gland function.
In my chameleon's situation, it is the fact that she does have to be on life-support in order to survive, and when I stop the life-support (good term by the way, that is exactly what it is), she wilts like a flower. That is the number one indicator that there is a major bodily malfunction, especially when different therapies have been utilized, and were unsuccessful, it indicates that the problem is chronic, and not an easily fixable acute condition. I have not had specific tests done to check exact pancreatic and liver function, and the thing is I don't really need to, because signs, symptoms, and initial lab results speak volumes. For example, if she does not receive SQ fluids as well as 20 cc of water daily (which is a TON), she shows severe signs of dehydration... however this leads to other problems which I will explain in a second. I stopped with the SQ fluids a couple days ago, and she is not absorbing water for her cells to utilize, which is apparent by looking at her, as well as her PCV/TP (packed-cell volume/total protein) which shows if an animal's blood is so dehydrated that there is very little serum compared to red blood cells.
One condition also leads to another, for example, excessive uric acid build-up in the blood increases the thirst, and increases the amount of water needed to flush the nitrogenous wastes out of the blood-stream, however, this excess water also rids the bloodstream of essential electrolytes, causing further problems. It is a lose-lose situation.
Also, upon x-ray, the size of the organs in question are measured, and if excessively enlarged, that confirms the diagnosis of kidney failure based on symptoms, blood results, and radiograph.
That is the tricky part about veterinary medicine, it is easy for people to be one-track minded about their approach to animal care, and when you are focused on one thing alone, which is easy to do, you miss an obvious diagnosis. The big picture is what is key to diagnosis. It sounds easier said than done, but it took me years to actually get it down.
She is not doing well, I am going to have her euthanized in the morning. At least she was given a chance and she has made me very passionate about her species. I really want to acquire CB Melleri, and eventually breed them, or at least try to promoting acquiring the species through a breeder so less of these animals are taken from the wild and tortured like she was. She won't have died in vain.