Mac's labs show he is compensated IR which is a category that puts him still at risk of laminitis if diet and exercise are not attended to.  There have been many members with compensated IR horses who have tipped into IR/laminitis state when diet was not optimal.  The good news is that many also found their way out of compensated IR with diet and exercise.

Here's a brief explanation from Dr Kellon.

> At 4:26 PM +0000 5/1/08, Jami wrote:
> >Forgot to ask...what does compensated IR mean exactly? I tried to
> >find an answer in the files but couldn't find it.

The term was lifted from the Virginia Polytechnic pony field study.
They called the IR ponies that had laminitis "decompensated"
(equivalent to G:I below 4.5) and the ones that were IR but not
laminitic "prelaminitic" (G:I between 4.5 and 10). I like compensated
(as opposed to decompensated) better than prelaminitic. Puts a more
positive slant on it!

Eleanor
http://www.drkellon.com

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GREAT that you are working with Kathy on the diet.

Make sure your vet sends the labs to Cornell!