noun. Any of various substances added to plastics or other materials to make or keep them soft or pliable.

noun. Any of various substances added to a material (such as plastic or concrete) in order to make it more pliable.

noun. a substance added to plastics or other materials to make them more pliable

"The test for the plasticizer has been available for about a year and can not be used to directly indicate doping, but can be used as one piece of evidence to establish a non-analytical doping charge."

softener  

any  carotenoid  cell-adhesion  cellsurface  costimulatory