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abstractpubmed· Abstract 2020· item PMID:32969788

Sensitive Detection of SARS-CoV-2-Specific Antibodies in Dried Blood Spot Samples. Dried blood spot (DBS) samples can be used for the detection of severe acute respiratory syndrome coronavirus 2 spike antibodies. DBS sampling is comparable to matched serum samples with a relative 98.1% sensitivity and 100% specificity. Thus, DBS sampling offers an alternative for population-wide serologic testing in the coronavirus pandemic.