Fig 1.
Study schema to determine the usability of the Tasso device for self-collection of capillary blood.
Two of 91 subjects were excluded due to inability to obtain blood samples; 56 convalescent and 33 healthy subjects had blood samples tested.
Table 1.
Study participant characteristics, N = 89.
Table 2.
Sample collection for 91 participants.
Table 3.
Distribution of anti-SARS-CoV-2 IgG results among study participants according to blood draw conditions (N = 89).
Fig 2.
EuroImmun anti-SARS-CoV-2 IgG results obtained from standard venous phlebotomy and capillary blood collected using Tasso-SST devices.
Each circle represents results from an individual participant. Correlation between EuroImmun OD ratios from venous blood and provider-administered Tasso device collected capillary blood (Tasso Unstressed (TU), N = 89, p<0.0001, Deming regression: Y = 1.00*X—0.04) (A). Correlation between venous samples results and those from stressed Tasso-SST (TS) samples under summer (B, N = 44, p<0.0001, Deming regression: Y = 1.00 *X– 0.03) or winter conditions (C, N = 45, p<0.0001, Deming regression: Y = 0.99*X– 0.03).