- Special tests used to measure the reaction of the skin to ultraviolet radiation. Phototesting is being used to see if drugs taken by mouth to treat cancer make the skin more sensitive to ultraviolet radiation.
English dictionary of cancer terms . 2015.
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phototesting — pho·to·test·ing (fo″to testґing) testing of the reaction of the skin to ultraviolet radiation at various dose levels. Cf. erythema dose, under dose … Medical dictionary