Fig. 5From: Rapid and validated UHPLC method for simultaneous determination of sofosbuvir, ledipasvir and paracetamol as commonly repurposed drugs for COVID-19 treatment: application in spiked human plasmaA Chromatogram of blank human plasma showed no drug peak interference. B UHPLC chromatogram of analytes in drug spiked human plasma: SOF (35 µg/mL; Rt = 3.2 min), LDV (20 µg/mL; Rt = 2.27 min) using PAR (10 µg/mL; Rt = 1.66 min) as internal standardBack to article page