Volume 26, Number 12—December 2020
Sensitive Detection of SARS-CoV-2–Specific Antibodies in Dried Blood Spot Samples
|Sample type||Mean immunoglobulin concentration, g/L*
|IgG (range)||IgA (range)||IgM (range)|
|DBS||1.08 (0.17–2)||0.25 (0.1–0.6)||0.13 (0.1–0.3)|
|Serum||11.77 (8.18–18.59)||2.55 (1.5–5.2)||0.99 (0.3–1.5)|
*DBS, dried blood spot; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2. †Includes 10 matched DBS and serum and 5 pre–August 2019 DBS.
1These senior authors contributed equally to this article.
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