<<Disclaimer: Verify this information before applying it to your situation.>> > Allergy testing never seems to help. > Has she had the M.A.S.T. allergy test done? This is a derivative of horse radish and it only requires the drawing of blood once. It is much less invasive and much more 'specific' to many more allergins. It is a relatively new test last seven years or so. Not all labs are 'up' on it. Tom