Practical reasons for poor RDT performance

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Possible causes for poor test performance Assay-specific factors: 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. 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