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Allen JWL, Verkerke H, Owens J, Saeedi B, Boyer D, Shin S, Roback JD, Neish AS, Stowell SR. Serum pooling for rapid expansion of anti-SARS-CoV-2 antibody testing capacity. Transfus Clin Biol 2020; 28:51-54. [PMID: 33096207 PMCID: PMC7575425 DOI: 10.1016/j.tracli.2020.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Objectives Examine possible pooling strategies designed to expand SARS-CoV-2 serological testing capacity. Methods Negative pools were assessed to determine optimal optical density (OD) cutoffs, followed by spiking weak or strong positive samples to assess initial assay performance. Samples were then randomly subjected to pool and individual testing approaches. Results Single positive specimens consistently converted pools of 5, 10, or 20 into positive outcomes. However, weaker IgG-positive samples failed to similarly convert pools of 50 to a positive result. In contrast, a stronger individual positive sample converted all pools tested into positive outcomes. Finally, examination of 150 samples configured into pools of 5, 10, 20 or 50 accurately predicted the presence of positive or negative specimens within each pool. Conclusions These results suggest that pooling strategies may allow expansion of serological testing capacity. While limitations exist, such strategies may aid in large-scale epidemiological screening or identification of optimal convalescent plasma donors.
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Affiliation(s)
- J W L Allen
- Department of Laboratory Medicine and Pathology, Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, 201, Dowman Dr, 30322 Atlanta, GA, United States; Department of Pathology, Joint Program in Transfusion Medicine, Harvard Medical School, Brigham and Women's Hospital, 630D New Research Building, 02115 Boston, MA, United States
| | - H Verkerke
- Department of Laboratory Medicine and Pathology, Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, 201, Dowman Dr, 30322 Atlanta, GA, United States; Department of Pathology, Joint Program in Transfusion Medicine, Harvard Medical School, Brigham and Women's Hospital, 630D New Research Building, 02115 Boston, MA, United States
| | - J Owens
- Department of Laboratory Medicine and Pathology, Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, 201, Dowman Dr, 30322 Atlanta, GA, United States
| | - B Saeedi
- Department of Laboratory Medicine and Pathology, Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, 201, Dowman Dr, 30322 Atlanta, GA, United States
| | - D Boyer
- Department of Laboratory Medicine and Pathology, Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, 201, Dowman Dr, 30322 Atlanta, GA, United States
| | - S Shin
- Department of Laboratory Medicine and Pathology, Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, 201, Dowman Dr, 30322 Atlanta, GA, United States
| | - J D Roback
- Department of Laboratory Medicine and Pathology, Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, 201, Dowman Dr, 30322 Atlanta, GA, United States
| | - A S Neish
- Department of Laboratory Medicine and Pathology, Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, 201, Dowman Dr, 30322 Atlanta, GA, United States
| | - S R Stowell
- Department of Laboratory Medicine and Pathology, Center for Transfusion Medicine and Cellular Therapies, Emory University School of Medicine, 201, Dowman Dr, 30322 Atlanta, GA, United States; Department of Pathology, Joint Program in Transfusion Medicine, Harvard Medical School, Brigham and Women's Hospital, 630D New Research Building, 02115 Boston, MA, United States.
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