Have a few questions about the T4 levels, Hyperthyroidism and I-131 Treatment.
I know before I-131 treatment, often cat get treated with meds (thermal gel or pill) and that's stopped about 7-14 days before the I-131 treatment.
My questions are how important is it that the T-4 levels are down to about normal range before the I-131 treatment? Yes, I understand if a cat is showing signs of hyperthyroidism we wish to treat them to get them more stable while waiting for the I-131 treatment.
For example, say a cat has a very high T4 and takes meds and cuts the T4 level down but still a bit high. Wouldn't at the time of the I-131 treatment, wouldn't the treatment take care of and probably cure the hyperthyroidism regardless if the T4 levels were in good range or not? If not, then what am I missing?
I know before I-131 treatment, often cat get treated with meds (thermal gel or pill) and that's stopped about 7-14 days before the I-131 treatment.
My questions are how important is it that the T-4 levels are down to about normal range before the I-131 treatment? Yes, I understand if a cat is showing signs of hyperthyroidism we wish to treat them to get them more stable while waiting for the I-131 treatment.
For example, say a cat has a very high T4 and takes meds and cuts the T4 level down but still a bit high. Wouldn't at the time of the I-131 treatment, wouldn't the treatment take care of and probably cure the hyperthyroidism regardless if the T4 levels were in good range or not? If not, then what am I missing?