A bit of history…

first edition of
patch testing, 1986

second edition of
patch testing, 1994
First edition
The First Edition of Patch Testing was published in 1986. It contained test concentrations and vehicles for 2800 allergens. You can read Book Reviews here.
Second edition
The second Edition of Patch Testing was published in 1994 and now contained information for over 3700 chemicals. It was praised in many Book Reviews and was sold out in 2006.


