A comparison of microscopic examination and rapid diagnostic tests used in Guyana to diagnose malaria

Submitted: 27 October 2011
Accepted: 2 May 2012
Published: 10 August 2012
Abstract Views: 7082
PDF: 2110
Publisher's note
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.

Authors

The aim of this study was to compare rapid diagnostic tests (RDTs) for malaria with routine microscopy for a prompt and accurate diagnosis of malaria and to provide an effective disease management in Guyana. Blood samples were collected randomly from 624 patients with clinical suspicion of malaria from four private hospitals in Georgetown, Guyana. The five different test methods [Paramax-3, Optimal-IT, VISITECT Malaria Combo PAN/Pf, Standard Diagnostic (SD) Bioline and conventional Giemsa stain microscopy] were performed independently by well trained and competent laboratory staff to assess the presence of malaria parasites. Results from the rapid diagnostic kits were analyzed and compared to those obtained by general microscopy. Of the 624 patients involved in the study, 197 (31.6%) tested positive and 427 (68.4%) tested negative to RDT whereas 190 (30.4%) tested positive and 434 (69.6%) tested negative to microscopy. The positive agreement index between RDT and microscopy was 89%. A comparison of microscopy with the RDTs, Paramax, Opitmal- IT, Omega, SD, showed a positive agreement index of 93%, 86%, 80% and 86%, respectively. The study, therefore, highlights the importance of both methods in diagnosis of malaria in endemic areas. Microscopy is the more reliable method in rural areas where malaria is most prevalent. RDT offers a good alternative, being an easy and rapid method that does not require an experienced laboratory technician.

Dimensions

Altmetric

PlumX Metrics

Downloads

Download data is not yet available.

Citations

How to Cite

Kurup, R., & Marks, R. (2012). A comparison of microscopic examination and rapid diagnostic tests used in Guyana to diagnose malaria. Malaria Reports, 2(1), e2. https://doi.org/10.4081/malaria.2012.e2