http://www.medscape.com/viewarticle/767159_4


consider measurement of a baseline tryptase level to identify mastocytosis/clonal mast cell disorders.

An elevated baseline serum total tryptase level is a predictor of severe insect sting reactions, frequent systemic reactions during venom immunotherapy, the possibility of venom immunotherapy failure, and the risk of relapse if venom immunotherapy is stopped.[12,13,64]

A ? relapse to what . and if the immunotherapy is not stoped when failure

venom immunotherapy is safe if it is done properly