It is likely the steroids that would affect the test are going to be ones you take orally, such as prednisone or other oral corticosteroids. Inhaled/sprayed corticosteroids like nasal sprays and breathing medicines are not going to have nearly as much effect on the body systemically. Those can be used continually without the classic long term side effects of the orally taken drugs which are much higher dosage. I would not worry about discontinuing use of a nasal spray.
If someone has a condition where they have been on oral steroids such as prednisone, for a long time, then they would need to look into the possibility of a false negative on the blood tests. Even in that case, because oral corticosteroids are not something you can abruptly discontinue, it is likely the test would still be done. Then if it is borderline negative/negative, the possibility of a false negative can be looked in to.
I'm with Laura. I think they mean the kind you take orally for a long time.
This is what I was thinking too.
Inhaled steroids are at a MUCH lower concentration for sure. Our Dr. said a 5 day course of oral steroids was about equal to a YEAR on inhaled. They are more targeted and though they would enter the blood stream it wouldn't be in very large doses at all.
I would call your Dr. for clarification. If they don't know then perhaps they can consult with someone who would know.
Thanks folks! He's already been off the nasonex for 3 weeks anyway so we went and had his blood drawn today. I think it makes sense that they would be referring to oral steroids that had been taken for a long time. I appreciate all your knowledge and insight!