There's another thread about someone who had bloodwork tested from the heart that gave a positive test for IBD. Apprently, they can also show negative results while being positive too.
There's a new paper out of California I believe about testing IBD and such. I haven't seen it just heard of it so I'd go looking for it.
Honestly, the only way that we've been able to determine IBD is post mortem. If the shop you have her at thought it was IBD they would get rid of her AS SOON as they could because it would essentially shut down any boa/python keeping or selling in the store for an ENTIRE year. Not good for business.
This is an older paper of 2 years but there's not really much research being done on it.
http://labs.vetmed.ufl.edu/files/201...JexoticPet.pdf
This thread here is another forum and it's about a possible case of IBD in a python but still it should give you some insight as there's some top notch doctors discussing the disease in the thread. It's worth a read.
IBD..DISCUSSION..Opinions appreciated