EPI * Exocrine Pancreatic Insufficiency

We joined EPI for dogs last week...out 15 month old female GSD originally got sick in August 2011 after her rabies shot.  When I bought her, she seemed like a super healthy puppy.  After doing lame for 11 days AFTER her rabies shot, she has gone down hill...in January she developed a few staph infection (not sure why), then right after I switched vets and found out her TLil came back on a range of 5-35, she came back > 50.00 HIGH, confirmed at 74.7.  They want to do more tests.  I want to use TAMU and can't find a vet to draw blood for me here in my area.