How do you reconcile differences between SPT and serum IgE testing for aeroallergens when preparing AIT?  

The 2008 Allergy Diagnostic Testing Practice Parameters would note as follows:"The precise sensitivity of these immunoassays (serum IgE testing) compared with prick/puncture skin tests has been reported to range from less than 50% to greater than 90%, with the average being approximately 70% to 75% ...