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. 2020 Nov 7;489:112909. doi: 10.1016/j.jim.2020.112909

Fig. 4.

Fig. 4

A-B. Biolidics LFI results in six paired venous plasma (A, top row) and whole blood (B, bottom row) samples showing concordant results. Test interpretation by numbered test kits: 31, IgM (+), IgG (+); 32, IgM (+), IgG (+); 33, IgM (−), IgG (+); 34, IgM (−), IgG (−); 35, IgM (−), IgG (+). C. Biolidics LFI results of (left to right) venous whole blood, venous plasma, capillary finger stick at 10 days after PCR diagnosis, and capillary finger stick at 16 days after PCR diagnosis. All 3 sample types at day 10 show IgM (+) and IgG (−), while capillary finger stick at day 16 shows IgM (+) and IgG (+). D. Biolidics LFI with capillary samples of two household members with simultaneous COVID-19. Left image shows IgM (−) and IgG(−) while right image shows IgM (−) and IgG (+).