I've had allergies to pollen and dust for about 20yrs and recently had a rast blood test done in hospital, it has come back negative which is nice although I'm puzzled as I got tested for food and pet allergies and I really expected a positive result.
Not that I want it to be but I do get a reaction when I'm around certain dogs and cats and also when I eat certain meals. I've been told reactions could be minutes to up to 48hrs after contact so it's hard to pin point without tests.
Well, sometimes I get reactions straight away when I go to a house with a cat or dog and I'm coughing really bad after a lot of meals and feel like choking.
So how can a rast test be negative with all these symptoms?
I'm on fexofenadine and singulair, could that have had an influence on the test?
In the past I used to have to come off antihistamines a few days before testing so obviously I'm a bit confused.
Any ideas? I'm just fed up and want to get to the bottom of all this.
Love Lydia xx