Practical reasons for poor RDT performance

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Possible causes for poor test performance Selection and procurement of MDTs 1. Quality of test design/production. There is significant variation of performance between tests, users are advised to check test performance (see WHO testing information available from [1]. 2. Lot to lot variability. Variability between batches has been observed and should be considered if RDT performance is less than expected. 2. Heat stability of the RDT test storage 3. Age of test/reagents Operator-Specific Factors Operator-Inappropriate placement of reagent or blood drop Operator-Interpreting faint line