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Younes N, Al-Sadeq DW, Shurrab FM, Zedan HT, Abou-Saleh H, Abo-Halawa BY, AlHamaydeh FM, Elsharafi AE, Daas HI, Thomas S, Aboalmaaly S, Al Farsi A, Al-Buainain R, Ataelmannan S, Paul J, Al Saadi AS, Yassine HM, Majdalawieh AF, Ismail A, Abu-Raddad LJ, Nasrallah GK. Validation of a Novel Fluorescent Lateral Flow Assay for Rapid Qualitative and Quantitative Assessment of Total Anti-SARS-CoV-2 S-RBD Binding Antibody Units (BAU) from Plasma or Fingerstick Whole-Blood of COVID-19 Vaccinees. Vaccines (Basel) 2022; 10:vaccines10081318. [PMID: 36016206 PMCID: PMC9415525 DOI: 10.3390/vaccines10081318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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] [Received: 07/16/2022] [Revised: 08/11/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Limited commercial LFA assays are available to provide a reliable quantitative measurement of the total binding antibody units (BAU/mL) against the receptor-binding domain of the SARS-CoV-2 spike protein (S-RBD). Aim: This study aimed to evaluate the performance of the fluorescence LFA FinecareTM 2019-nCoV S-RBD test along with its reader (Model No.: FS-113) against the following reference methods: (i) the FDA-approved GenScript surrogate virus-neutralizing assay (sVNT); and (ii) three highly performing automated immunoassays: BioMérieux VIDAS®3, Ortho VITROS®, and Mindray CL-900i®. Methods: Plasma from 488 vaccinees was tested by all aforementioned assays. Fingerstick whole-blood samples from 156 vaccinees were also tested by FinecareTM. Results and conclusions: FinecareTM showed 100% specificity, as none of the pre-pandemic samples tested positive. Equivalent FinecareTM results were observed among the samples taken from fingerstick or plasma (Pearson correlation r = 0.9, p < 0.0001), suggesting that fingerstick samples are sufficient to quantitate the S-RBD BAU/mL. A moderate correlation was observed between FinecareTM and sVNT (r = 0.5, p < 0.0001), indicating that FinecareTM can be used for rapid prediction of the neutralizing antibody (nAb) post-vaccination. FinecareTM BAU results showed strong correlation with VIDAS®3 (r = 0.6, p < 0.0001) and moderate correlation with VITROS® (r = 0.5, p < 0.0001) and CL-900i® (r = 0.4, p < 0.0001), suggesting that FinecareTM can be used as a surrogate for the advanced automated assays to measure S-RBD BAU/mL.
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Affiliation(s)
- Nadin Younes
- Biomedical Research Center, Qatar University, Doha 2713, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
| | - Duaa W. Al-Sadeq
- Biomedical Research Center, Qatar University, Doha 2713, Qatar
- College of Medicine, QU Health, Qatar University, Doha 2713, Qatar
| | - Farah M. Shurrab
- Biomedical Research Center, Qatar University, Doha 2713, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
| | - Hadeel T. Zedan
- Biomedical Research Center, Qatar University, Doha 2713, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
| | - Haissam Abou-Saleh
- Biomedical Research Center, Qatar University, Doha 2713, Qatar
- Biological Science Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar
| | - Bushra Y. Abo-Halawa
- Biological Science Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar
| | - Fatima M. AlHamaydeh
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
| | - Amira E. Elsharafi
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
| | - Hanin I. Daas
- College of Dental Medicine, QU Health, Qatar University, Doha 2713, Qatar
| | - Swapna Thomas
- Biomedical Research Center, Qatar University, Doha 2713, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
| | - Sahar Aboalmaaly
- Laboratory Section, Medical Commission Department, Ministry of Public Health, Doha 42, Qatar
| | - Afra Al Farsi
- Laboratory Section, Medical Commission Department, Ministry of Public Health, Doha 42, Qatar
| | - Reeham Al-Buainain
- Laboratory Section, Medical Commission Department, Ministry of Public Health, Doha 42, Qatar
| | - Samar Ataelmannan
- Laboratory Section, Medical Commission Department, Ministry of Public Health, Doha 42, Qatar
| | - Jiji Paul
- Laboratory Section, Medical Commission Department, Ministry of Public Health, Doha 42, Qatar
| | - Amana Salih Al Saadi
- Laboratory Section, Medical Commission Department, Ministry of Public Health, Doha 42, Qatar
| | - Hadi M. Yassine
- Biomedical Research Center, Qatar University, Doha 2713, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
| | - Amin F. Majdalawieh
- Department of Biology, Chemistry and Environmental Sciences, College of Arts and Sciences, American University of Sharjah, Sharjah 26666, United Arab Emirates
| | - Ahmed Ismail
- Laboratory Section, Medical Commission Department, Ministry of Public Health, Doha 42, Qatar
| | - Laith J. Abu-Raddad
- Infectious Disease Epidemiology Group, Weill Cornell Medicine-Qatar, Cornell University, Qatar Foundation—Education City, Doha 24144, Qatar
- World Health Organization Collaborating Centre for Disease Epidemiology Analytics on HIV/AIDS, Sexually Transmitted Infections, and Viral Hepatitis, Weill Cornell Medicine-Qatar, Cornell University, Qatar Foundation-Education City, Doha 24144, Qatar
- Department of Healthcare Policy and Research, Weill Cornell Medicine, Cornell University, New York, NY 10065, USA
| | - Gheyath K. Nasrallah
- Biomedical Research Center, Qatar University, Doha 2713, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
- Correspondence: ; Tel.: +974-4403-4817; Fax: +974-4403-1351
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