what my personal trainer needs to say?

I guest my Surgeon needs documents of 2 years of WL( attempt) .  my question is what do I need my personal trainer say on her letter head?  also will this letter help me? 

I would google it. I found sample letters for my primary care doctor. I even wrote up one of the samples with  my information.
Eileen

Check with your insurance to see if the weight history is a requirement.  My surgeon's office gave me a form to fill out which states that I need 3yrs weight history.  When I checked with my insurance, they didn't require it.  Called back to my surgeons office and they told me that I didn't need it and they give that form to everyone since most insurance requires it. 

.....There is too much paperwork to the process already....pls don't add more. 

 I just got copies of my workout sheets from my trainer. I go to 24hour so they keep all my workout records on file. I'm sure your trainer has some kind of plan in writing as to what you've been doing for 2 years. It helped me!