Fig. 3
From: 3D printed fluidic swab for COVID-19 testing with improved diagnostic yield and user comfort
© Collected volume of NF samples with normal and high viscosity by the 3DPFS and CS. F Released volume of NF samples with normal and high viscosity by the 3DPFS and CS. G Absorbance at 600 nm of the NF samples collected and released by the 3DPFS and CS. The data were based on the mean ± standard deviation of three independently performed experiments. Statistical analysis was performed using Stud’nt’s t-test, and data with a p-value less than 0.05 were considered significant (*p < 0.05, **p < 0.01, ***p < 0.001). n = 3
Collected and released volume of NF on a flat surface by the 3DPFS and CS. A Schematic diagram illustrating the process for collecting 100 µL of NF containing blue dye on slide glasses using the 3DPFS and CS. The collected NF was released into a microtube for analysis of collected and released volumes by dye absorption. B Serial two-fold dilution of NF containing blue dye. C Standard curve drawn from optical density of the diluted NF samples shown in (B). D Comparison of NF collection efficiency between the 3DPFS and CS at different viscosities.