rx- reaction (as opposed to Rx for prescription)
IgA- another immunoglobulin (antibody) tested for indicating Celiac disease
SPT- Skin Prick Test (tests for IgE reactions)
GF- gluten free
SF- varies, can be sugar, can be soy, if you're unsure, ask
EF- egg free
DF- dairy free
CF- can be corn or casein (a milk protein) free
WF- Whole Foods (the store) or wheat free, depending on context
TJs- Trader Joe's
dx- diagnosis
supp- I think is fairly straight-forward, but it's supplement
HVCLO- I think is used elsewhere also, but it's High Vitamin Cod Liver Oil
EE- eosinophilic esophagitis (an extremely serious condition I don't know enough about to describe properly)
PF- peanut free
NF- (tree) nut free, though sometimes will include peanuts
cc- cross contamination
FS- used rarely but I have seen used for FailSafe, a specific allergy diet
Hopefully someone will chime in with descriptions of RAST and NAET.
eta: sf may also be sulphite free
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