I was concerned about the same thing, and I asked Allergan to send me the components so that I could have allergy testing completed. There IS nickel in the Lap Band port--and even though it's coated, I was still concerned. I went to an allergist and had a whole plethora of tests done to confirm that I would not have reaction to the nickel in the band. If you are concerned, you can always be tested. I requested the information from the Allergan website, and they emailed me the listing of components to provide to my doctor. Good luck!