Dry RBC solids were resuspended in 150 µl of pure water. And used directly in nh-PHIP. Dry plasma solids were taken up in 60 µl of pure water and 380 µl of methanol-d4 was added. The suspension was vortexed, and the solids were removed by centrifuge. The clear supernatant was used for nh-PHIP experiments without further treatment.