Who invented the TSH - what name/what company/what date

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There is a discussion going on on the NTH forum about who invented the Thyroid Stimulating Hormone test. I have never been able to find this out and have done a bit of searching as I need this information to start writing the next paper on the TSH testing. Somebody mentioned some time ago on this Forum that they thought Dr Toft had been involved, but I have never heard about this. Does ANYBODY know and can you point me in the direction where I can find evidence for this? There are several companies making TSH kits, but I don't want to know about them, just the Inventor(s).

I would be really grateful for any help anybody can give me on this particularly elusive information - or is it just me?

Luv - Sheila