Regarding: Don't have him have any antihistamine w/in 3 days prior
to the tests, it may negate the results.
Note, if your child has any other medications he or she takes, be
sure to ask the allergist about them. My son was on Tagamet when his first
testing was done, which showed ALL NEGATIVE. It was the tagamet that made
it all negative, and the allergist didn't have a clue! I had to take my son
off his tagamet for THREE WEEKS when I came to the specialist at our
children's hospital - just to be sure it didn't change the test results.
Good luck!
Katherine