In this episode, we sit down with Megan Cooley, Associate Director of Bioanalytical Services at ICON (KS, USA), to explore the cutting-edge world of antibody-drug conjugate (ADC) quantitation using high-resolution mass spectrometry (HRMS). Megan delves into the capabilities of Triple Quadrupole and Time-of-Flight mass spectrometry, offering her expert insights into whether HRMS is essential for ADC PK studies. We also tackle the challenges and limitations of HRMS in ADC quantitation and discuss the potential for AI to create more specific and stable ADCs. Finally, Megan highlights ICON’s extensive experience with large molecule applications and their innovative approach to supporting complex LC–MS analyses.