Nitrazine yellow test

Author:Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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DefinitionThis section has been translated automatically.

Orienting test for the evaluation of the alkaline resistance of the skin, especially in toxic-degenerative eczema (disturbance of the normal skin pH-value).

ImplementationThis section has been translated automatically.

1 drop of a 1% nitrazine gel solution is applied to an area of skin (usually the back of the hand or forearm flexor). The reading is taken after 30 seconds, with dot or spot-like colour changes indicating blue-black zones of reduced alkaline resistance. If more than 10 such dots or spots are detected, the test is considered positive. S.a. Alkali neutralisation test and alkali resistance test.

Authors

Last updated on: 29.10.2020

Author: Prof. Dr. med. Peter Altmeyer