Hell0--and welcome to our forum...

Are you a male or female? I ask because for a female that
ferritin is high. For a male it is still in a high range but high normal still. (unless Canadian reports different number ranges--which is possible)

Elevated ferritin may point to hemochromatosis. This is a genetic condition that deposits iron in the body and is very
serious. (may lead to death).

Your first B12 test was borderline low. Did you take supplements to get that second reading?

The gurgling you are having is probably gas. Do you take acid blocking drugs? Or perhaps are lactose intolerant, or have you had antibiotics recently? There could be many causes for the gas.

One has to look at what happened just before your first symptoms. Did you have flu with stomach issues? Vomiting/diarrhea? Were you exposed to any toxins, solvents, etc?

One cause of creeping neuropathy can be gluten in the diet.
This peptide from wheat/barley/rye passes thru the intestine and can cause neuro symptoms. Going Gluten Free and following the diet can help some people with neuropathies.
Gas and diarrhea may also be a symptom of this.

You can learn more here:
http://neurotalk.psychcentral.com/thread1872.html

The testing is complicated.
This recent thread has some testing suggestions:
http://neurotalk.psychcentral.com/thread67148.html
One has to be eating gluten containing foods, before testing
to get a reliable result.