Smartphone Diagnostics Unit (SDU) for the assessment of human stress and inflammation level assisted by biomarker ink, fountain pen, and origami holder for strip biosensor
The economical and light-weighted Smartphone Diagnostics Unit (SDU) was fabricated. The level of stress measured by the SDU was as similar as that of the 3D holder. The salivary cortisol and C-reactive protein (CRP) level were successfully measured.