Results of Tabby's blood test

Tabby writes:

The vet called today with the results of my bloodwork.  My liver enzyme levels are elevated, so the vet thinks that I probably have hyperthyroidism (also known as hyper-T).  It's managed with medication (methimazole) and retesting as needed.  I go in on Friday for them to test my thyroid levels with more blood draws, to see that the diagnosis is correct and to evaluate the dosage of medication.  Thanks so much for all your purrs, prayers, and good thoughts!  I ate (was force-fed by Mommy) one whole teaspoon of food at my last feeding! *glares at Mommy, though*

Weird question....

Skylar writes:

Mom talked with my regular doctor today, and we have a strange question!  Including the vet, who doesn't know the answer to this either!

Has anyone ever had their thyroid levels continue to go low?  I had mine checked back in November, after 4 years with hyper-T my meds were decreased from four to three, then two pills a day.  Redid tests, and it was normal again.  Now, after my vet appointment last week, my thyroid levels are low again, so we're trying half a pill per day.

The vet has no clue why I'm suddenly "getting better", or at least my thyroid levels are!  My creatinine & BUN are slightly elevated, just out of the normal range, not as bad as we'd originally thought (we got the exact numbers this time).  That part's to be expected, and I'm still going to have my yummy canned food and my sub-Q fluids to try to keep my kidneys semi-under control.  But we're (and the vet is) absolutely clueless as to why my thyroid levels are normalizing!!!

Any advice/help/experience would be appreciated!