High TSH in suspected Cushings

RE: High TSH in suspected Cushings

Aine Seavers — Mon, 03 Oct 2016 00:26:10 GMT

3 mths

RE: High TSH in suspected Cushings

Clive Ansell — Fri, 30 Sep 2016 18:28:01 GMT

A month or so maybe? when you do once of the follow up ACTH stim tests for monitoring.

RE: High TSH in suspected Cushings

Charlie Lyon — Fri, 30 Sep 2016 16:34:19 GMT

Pre ACTH 141

Post ACTH 800

Cushings it is... Plan to treat that first and then reassess TSH\T4 at some point, how long would people adv to wait before retesting?

RE: High TSH in suspected Cushings

Clive Ansell — Thu, 29 Sep 2016 16:27:44 GMT

I think the OP was concerned with whether the dog had both Cushing's and hypoT4. I would get all the results together and go from there -may be get the Cushing's under control (if +ve for) and then retest thyroid.

RE: High TSH in suspected Cushings

Robin Grimmer — Thu, 29 Sep 2016 15:23:54 GMT

Corticosteroids whether endogenous or exogenous will often lower T4 +- THS. Also hypothyroidism does not tend to cause pupd. I think it's much more likely you have cushings. What's the urine sg?

RE: High TSH in suspected Cushings

Clive Ansell — Thu, 29 Sep 2016 14:41:16 GMT

Also, do large amounts of endogenous corticosteroid affect level of T4/TSH and lower the values if it is cushingoid?

I seem to recall reading somewhere patients should be off any corticosteroids well before running T4/TSH tests.

RE: High TSH in suspected Cushings

Clive Ansell — Wed, 28 Sep 2016 15:36:32 GMT

I think I would hold off treatment until the ACTH stim test results are in - get all the information you want before deciding upon a treatment plan.

Given that

[quote user="Charlotte Lyon"]presented with a 3 year history of patchy fur loss over flanks and symmertrical patches of alopecia over both hips[/quote]

There is no need to hurry.