2013 Re: T.R.U.E Test and gold Dear Health Care Professional ...

degradation products of these depsides. Atranorin is suspected as a prime allergenic component, and its peak (measured with gas chromatography) is used todetermine the amount of oak moss in the fragrance mix patch. The gel vehicles used in this patch are hydroxypropylcellulose and β-cyclodextrin. The productis formulated to contain 430 mcg/cm 2 of fragrance mix, which corresponds to 348 mcg of fragrance mix per patch (approximately 70 mcg of geraniol, approximately35 mcg of cinnamaldehyde, approximately 54 mcg of hydroxycitronellal, approximately 54 mcg of cinnamyl alcohol, approximately 35 mcg of eugenol,approximately 15 mcg of isoeugenol, approximately 15 mcg of α-amylcinnamaldehyde, and approximately 70 mcg of oak moss). The components of fragrancemix are commonly used in toiletries, fragrances, and flavorings.Colophony (Position 7):Colophony is produced from the resin of the pine trees Pinus massoniana and Pinus tabuliformis. It is translucent, pale yellow or brownish yellow, brittle,and glassy in appearance. Colophony consists of 75% to 85% resin acids, 10% neutral fractions (i.e., terpenes), with the remaining part oxidation products.Oxidation products of abietic acid and other resin acids have been identified as the active allergenic components. The ultraviolet absorbance measurement ofone of the primary components, abietic acid, is used to quantify colophony. The gel vehicle is povidone. BHA and BHT are added in equal amounts of 0.05% asantioxidants. The product is formulated to contain 1200 mcg/cm 2 of colophony, which corresponds to 972 mcg of colophony per patch. Colophony is found inadhesives, sealants, and pine oil cleaners.Paraben Mix (Position 8):Paraben mix contains the five ester derivatives of parahydroxybenzoic acid: methyl, USP; ethyl, USP; propyl, USP; butyl, USP; and benzyl parahydroxybenzoate28