A method and a kit for quantification of at least one predictor promoting at least one multifactorial disease, intended for use in assessment of the risk for developing or progression of the at least one multifactorial disease for a subject are disclosed. The kit comprises a plurality of reservoir units (320), each reservoir unit (320) being arranged to releasably retain a skin irritation agent adapted to provoke an unspecific inflammatory response of skin. The kit comprises an estimation unit adapted to estimate a quantification of the at least one predictor on basis of an assessment of the at least one predictor performed by a user on basis of an assessment of the degree of severity of the inflammatory response to the skin irritation agent at each of a plurality of skin sites according to a predetermined inflammatory response criteria performed by the user and relative impact of the at least one predictor on the progress of the at least one multifactorial disease.
