Assessment of the performance of five malaria rapid diagnostic tests in health facilities in Abidjan (Côte d'Ivoire)
DOI:
https://doi.org/10.17420/ap7002.525Keywords:
Malaria, RDTs, HRPII, panLDHAbstract
Abstract
Regular monitoring of malaria rapid diagnostic tests (RDTs) for the management of uncomplicated malaria in healthcare facilities is a key factor in improving diagnostic quality and ensuring better case management. This study aimed to assess the performance of five RDTs (Standard Q Malaria P.f Ag and Standard Q Malaria P.f/Pan (SD Biosensor, Korea), One Step Malaria HRP2/pLDH (P.f/Pan) (Guangzhou Wondfo Biotech Co., Ltd., China), Malaria Pf/Pan (B&O Pharm, France), and Malaria test P.f/pan (Das Labor, Germany)) in two healthcare facilities in Abidjan. This cross-sectional study was conducted between September and October 2022. Overall, 250 patients suffering from uncomplicated malaria were included with a predominance of female patients (56.6%). The mean age was 22.3 years (SD = 20.6; range, 0.17–73). Of the patients tested, forty-six (46) tested positive for thick smears, reflecting a prevalence of 18.5%. Plasmodium falciparum was the most commonly detected species (93.5%). The geometric mean parasitemia was 6,111.80 parasites/μL (SD = 80,026.93) (range: 116–412461). The sensitivity ranged from 95.24% to 95.65%, whereas the specificity ranged from 93.07 to 94.09% for all five tests evaluated. The false positive rate of the tests was less than 10%. No invalid test results were reported. Two-thirds of P. malariae cases detected by microscopy showed also positive results with all the RDTs. All five RDTs showed 100% sensitivity at low parasitemia levels (< 1,000 parasites/µl blood) including three cases of parasites < 200 parasites/µl blood. This study demonstrated the importance of monitoring the performance of RDTs in clinical samples.
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