The device has been developed by Germany's first medical university, the Charité in Berlin (Prof. Marcus Maurer). With TempTest® the described urticaria can be determined and in contrary to the commonly used "ice cube test" also the exact, variable temperature triggering the symptoms for this person can be stated.
The TempTest® produces temperatures of 4°- 44° C, which are applied to the skin. The patient places the inner forearm on an aluminum stencil on the device for 5 minutes. The stencil produces the temperature range continuously. With this procedure it is determined at which threshold temperature (highest temperature for cold- and lowest temperature for heat urticaria) wheals are triggered.
After 10 more minutes, the wheals on the skin are compared to the foil stencil and the threshold temperature is determined conveniently
. The wheals can be marked on the foil and it can be saved in the patient file for medical documentation of the therapy. The aim of each therapy is to lower the temperature threshold for CCU.