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. 2011 Mar;49(1):33-8.
doi: 10.3347/kjp.2011.49.1.33. Epub 2011 Mar 18.

Evaluation of rapid diagnostics for Plasmodium falciparum and P. vivax in Mae Sot Malaria endemic area, Thailand

Wanna Chaijaroenkul  1 , Thanee Wongchai, Ronnatrai Ruangweerayut, Kesara Na-Bangchang
Affiliations

Evaluation of rapid diagnostics for Plasmodium falciparum and P. vivax in Mae Sot Malaria endemic area, Thailand

Wanna Chaijaroenkul et al. Korean J Parasitol. 2011 Mar.

Abstract

Prompt and accurate diagnosis of malaria is the key to prevent disease morbidity and mortality. This study was carried out to evaluate diagnostic performance of 3 commercial rapid detection tests (RDTs), i.e., Malaria Antigen Pf/Pan™, Malaria Ag-Pf™, and Malaria Ag-Pv™ tests, in comparison with the microscopic and PCR methods. A total of 460 blood samples microscopically positive for Plasmodium falciparum (211 samples), P. vivax (218), mixed with P. falciparum and P. vivax (30), or P. ovale (1), and 124 samples of healthy subjects or patients with other fever-related infections, were collected. The sensitivities of Malaria Ag-Pf™ and Malaria Antigen Pf/Pan™ compared with the microscopic method for P. falciparum or P. vivax detection were 97.6% and 99.0%, or 98.6% and 99.0%, respectively. The specificities of Malaria Ag-Pf™, Malaria Ag-Pv™, and Malaria Antigen Pf/Pan™ were 93.3%, 98.8%, and 94.4%, respectively. The sensitivities of Malaria Ag-Pf™, Malaria Antigen Pf/Pan™, and microscopic method, when PCR was used as a reference method for P. falciparum or P. vivax detection were 91.8%, 100%, and 96.7%, or 91.9%, 92.6%, and 97.3%, respectively. The specificities of Malaria Ag-Pf™, Malaria Ag-Pv™, Malaria Antigen Pf/Pan™, and microscopic method were 66.2%, 92.7%, 73.9%, and 78.2%, respectively. Results indicated that the diagnostic performances of all the commercial RDTs are satisfactory for application to malaria diagnosis.

Keywords: Plasmodium falciparum; Plasmodium vivax; Thailand; malaria diagnosis; rapid detection test (RDT).

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