"The Pulse Test" by Arthur F. Coca, M. D. is a self test that one
can use to determine their food allergies. He is an imminent allergist and
discovered this test while determining his wife's illnesses in the 1930s.
It's available at Amazon at http://www.amazon.com/Pulse-Test-Arthur-F-Coca/dp/0312956991/ref=sr_1_1?s=boo...
but am sure you can find it summarized in on-line web sites as well.
You basically limit what you eat and then take your pulse rate after eating and
if it is elevated, you are allergic to what you just ate.