Bioanalytical testing is a cornerstone in pharmaceutical development, providing crucial data on pharmacokinetics, pharmacodynamics, and immunogenicity to determine the patient safety margins of effective new drugs. For laboratories conducting small and large molecule bioanalysis, harmonized sample management processes, study protocol organization, quantitative assay development and validation, and data flow optimization are compulsory. Adopting a combined LIMS and ELN platform transforms disconnected practices, providing better control over data and improving efficiency and compliance with regulations.