Glucose modified carbon paste sensor in the presence of cationic surfactant for mefenamic acid detection in urine and pharmaceutical samples

•The electro-oxidation of mefenamic acid (MA) was performed using GLU/CPE in the presence of CTAB.•The sensing displayed mixed diffusion-adsorption controlled process.•The method exhibited a wider linear dynamic range and a low limit of detection.•The developed sensor efficiently detected MA in both biological and pharmaceutical samples.