Hello again Dr. Salkin,
Thank you for your patience while I got the results you needed.
I can see on the paperwork I was given by my local Vet today that he did request a 'Geriatric Including T4 Total' when Tinker had her blood taken at the end of July last year. However I can't see a result for it, her Thyroxine level was 19.3 and below that the pathologist has written:
"Result consistent with normal thyroid function. Values in the upper portion of the reference interval may occur in some cats with hyperthyroidism, free T4 by equilibrium dialysis is often elevated in these cases. For hyperthyroid cats on therapy, values in the lower half of the reference interval re consistent with with good clinical control."
All abnormalities were: Albumin - 23.5, Urea - 12.5, ALT - 170.5, CK - 402.2, Cholesterol - 1.90, White Cells - 19.8, Neutrophils (Absolute) - 16.83, Lymphocytes (Absolute) - 1.19, Eosinophils (Absolute) - 1.78.
I hope this helps, sorry for the long reply, I'm just worried about Tinker. Thank you once again for your time, patience and advise.