A Commercially available MIP specific for NSAIDs was use and the procedure recommended by the supplier was adapted as indicated.MIP cartridge was equilibrated with 1 ml acetonitrile,1 ml methanol and 1 ml 10mM ammonium formate (pH3) in water under gravity flow.A sample volume,from 1 to 50 ml,was adjusted to pH3 by addition of 100 mM ammonium formate in water and loaded through the MIP cartridge at an appoximate speed of 2 ml/min using a SPE vacuum manifold.Cartridge was washed 1 ml deionized water and 1 ml 40% acetonitrile in water.Vacuum was applied through the cartridge after the washing step to remove residual moisture and dry the cartridge.Finally,NSAIDs were eluted with 1 ml methanol,filtered using 0.22 ul PTFE synringe filter,and directly analyzed by the corresponding LC-DAD and UHPLC-MS-MS system.