Figure 1 | Scientific Reports

Figure 1

From: Underscoring the effect of swab type, workflow, and positive sample order on swab pooling for COVID-19 surveillance testing

Figure 1

Swab characterizations. (A) Anterior nasal tissue model comprising a silk-based sponge loaded with synthetic nasal mucus spiked with FITC-labelled microbeads, as a surrogate for cellular material. (B) Macro image of the silk-based anterior nasal tissue model. Scale bar = 10 mm. (C) Mass uptake during the benchtop swabbing procedure was quantified by gravimetrical analysis. ClearTip displayed a significantly lower uptake in comparison to Steripack, Puritan Flocked, and Puritan Foam control swabs. (D) Release quantification of injection molded, ClearTip, in comparison to commercially available controls in 2% w/v PEO loaded with 80% v/v FITC-labeled microparticles. *Significant effect of swab type (p < 0.05). Image partially created with Biorender.

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