Just spoke with the vet and here is the info on the test that they used to confirm dx of pancreatitis along with elevated lipase and amylase:
In 2007, IDEXX introduced the SNAP cPL, a version of the Spec cPL test that can be done in-house by your veterinarian and return results in 10 minutes. The result is a color spot that is either lighter than the reference spot (normal range), the same as the reference spot (intermediate range, comparable to 201-399), or darker than the reference spot (consistent with pancreatitis). If the SNAP cPL test results are abnormal, IDEXX recommends that you follow up with a Spec cPL test to establish a baseline cPL concentration and to monitor treatment.
I'm guessing I did remember correctly when I said our vet reported the results as being over 400 as this is consistent with the above range. Now that I know they used a rapid SNAP test I'm considering going back to request a Spec cPL later in the week to establish a baseline so I know what I'm working with and to be sure that the inflammation is in fact subsiding.
Thanks again to everyone! Abbie slept well last night and has not had a bowel movement (loose or otherwise) yet as of 11 AM. It has been a scary road and I'm appreciative of all comments and concerns.