MBT = mercaptobenzothiazole; n = number of patients in sample population; pet = petrolatum. † 3491 patients were tested to the mercapto mix 1% pet. ‡ 4,908 patients were tested with mercapto ...

Approval by the University of Pennsylvania Institutional Review Board was obtained prior to the initiation of this retrospective chart review. All patients who were patch-tested between July 1 ...