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- Title
Considerations for quality assurance of multiplex malaria antigen detection assays with large sample sets.
- Authors
Alvarado, Rachel; van den Hoogen, Lotus L.; Iriemenam, Nnaemeka C.; Akinmulero, Oluwaseun O.; Thomas, Andrew N.; Tamunonengiyeofori, Israel; Erasogie, Evbuomwan; Chimaoge, Achugbu C.; Dawurung, Ayuba B.; Esiekpe, Mudiaga K.; Okoli, Mary U.; Mba, Nwando; Ogunniyi, Abiodun; Abimiku, Alash'le; Maire, Mark; Bassey, Orji O.; Okoye, McPaul; Swaminathan, Mahesh; Greby, Stacie M.; Ndodo, Nnaemeka
- Abstract
Multiplex assays for malaria antigen detection can gather data from large sample sets, but considerations for the consistency and quality assurance (QA) of mass testing lack evaluation. We present a QA framework for a study occurring November 2019 to March 2020 involving 504 assay plates detecting four Plasmodium antigens: pan-Plasmodium aldolase and lactate dehydrogenase (LDH), histidine-rich protein 2 (HRP2), P. vivax LDH (PvLDH). Controls on each plate included buffer blank, antigen negative blood, and 4-point positive dilution curve. The blank and negative blood provided consistently low signal for all targets except for pAldolase, which showed variability. Positive curve signals decreased throughout the 5-month study duration but retained a coefficient of variation (CV) of < 5%, with the exception of HRP2 in month 5 (CV of 11%). Regression fittings for inter-plate control signals provided mean and standard deviations (SDs), and of 504 assay plates, 6 (1.2%) violated the acceptable deviation limits and were repeated. For the 40,272 human blood samples assayed in this study, of 161,088 potential data points (each sample × 4 antigens), 160,641 (99.7%) successfully passed quality checks. The QA framework presented here can be utilized to ensure quality of laboratory antigen detection for large sample sets.
- Subjects
MALARIA; ANTIGENS; PLASMODIUM; LACTATE dehydrogenase; BLOOD sampling
- Publication
Scientific Reports, 2021, Vol 11, Issue 1, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-021-92723-w