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Table 2 Interpretation of WHO tube test results

From: Characterizing the insecticide resistance of Anopheles gambiae in Mali

Mean Mortality (%) Mean survival Resistancea Susceptibilitya
98–100 <2 % No evidence of resistance (S)b Population fully susceptible
90–97 >2 % but <10 % Possible resistance (PS)b
(confirmation needed) 		 
<90 >10 % Confirmed (R)b assumed to be equal to % survival  
  1. aSusceptibility and resistance considered as opposite interpretations of mortality
  2. bUsed in Table 3
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