Hey, my DD is almost 7 months old and when I to...

Hey, my DD is almost 7 months old and when I took her to the clinic a couple of weeks ago she said that if I wanted to then I could put a bit of peanut butter on the inside of wrist to see if she has a reaction. I haven't tried it as I'm worried incase she has a reaction to it as we are 30 mins away from the nearest hospital if she has a severe reaction. I'm not sure if I should do it or not.