Thank you all so much for taking the time to respond. I really appreciate it. In my heart, I know something isn't quite right. He has had a cough now for about 3 weeks even with breathing treatments. I was planning to wait for my appt with the immunologist to mention the testing, but I think I will schedule an appt with his doc to follow-up on the cough and ask her then. I'll let you know how it turns out.
Thanks again for the support and advice.
Thanks again for the support and advice.