L. M.Rey Gomez, D. W.Inglis, A.Care, Y.Wang, and R.Hirani, “Impact of Paper Substrates and Storage Conditions on the Stability of Blood Grouping Assays.” Advanced Materials Interfaces (2026): e01090. https://doi.org/10.1002/admi.202501090 Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement The data that support the findings of this study are available from the corresponding author upon reasonable request.