Finger stick blood test to assess postvaccination SARS‐CoV‐2 neutralizing antibody response against variants
Bioengineering & Translational Medicine
; 7(2), 2022.
Article
in English
| ProQuest Central | ID: covidwho-1848906
ABSTRACT
There is clinical need for a quantifiable point‐of‐care (PoC) SARS‐CoV‐2 neutralizing antibody (nAb) test that is adaptable with the pandemic's changing landscape. Here, we present a rapid and semi‐quantitative nAb test that uses finger stick or venous blood to assess the nAb response of vaccinated population against wild‐type (WT), alpha, beta, gamma, and delta variant RBDs. It captures a clinically relevant range of nAb levels, and effectively differentiates prevaccination, post first dose, and post second dose vaccination samples within 10 min. The data observed against alpha, beta, gamma, and delta variants agrees with published results evaluated in established serology tests. Finally, our test revealed a substantial reduction in nAb level for beta, gamma, and delta variants between early BNT162b2 vaccination group (within 3 months) and later vaccination group (post 3 months). This test is highly suited for PoC settings and provides an insightful nAb response in a postvaccinated population.
Medical Sciences; cellulose pulldown assay; COVID19; humoral response against COVID19 variants; neutralizing antibody; point‐of‐care test; SARS‐CoV‐2; serology test; Infections; Antibodies; Plasma; Vaccines; Neutralizing; Glycerol; Blood; Severe acute respiratory syndrome coronavirus 2; Cellulose; Mutation; Public health; Chromatography; Immunoglobulins; Enzymes
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Collection:
Databases of international organizations
Database:
ProQuest Central
Topics:
Variants
Language:
English
Journal:
Bioengineering & Translational Medicine
Year:
2022
Document Type:
Article
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