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Article
September 1970

Time-Saving Patch Test Antigen Dispenser

Author Affiliations

Copenhagen; High Wycombe, England

From the Finsen Institute, Copenhagen (Drs. Hjorth and Trolle-Lassen), and the Department of Dermatology, Wycombe General Hospital, High Wycombe, England (Dr. Wilkinson). Dr. Hjorth is now with the Department of Dermatology, Amtssygehuset, Denmark.

Arch Dermatol. 1970;102(3):300-303. doi:10.1001/archderm.1970.04000090062009
Abstract

The need for absolute accuracy, consistency, and conformity in patch testing has been increasingly recognized for results that are expected to be meaningful and comparable. To reduce to a minimum the errors inseparable from a technique that must be carried out by hand, a patch test antigen dispenser has been evolved that allows a "no-touch" technique a conformity of application. The dispenser has five interchangeable trays, each holding five allergenloaded syringes. At discretion, specific test series or a fixed battery of 25 substances can be mounted. A minor difficulty arising from differences in the viscosities of the petrolatumallergen mixtures can be corrected by an appropriate admixture of soft and hard paraffin. This time-saving dispenser may prove of value to those engaged in multiple patch testing.

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