tokens: For all samples , the sensitivity of the blast flag on the CD3500 was 85 % with a specificity of 91 % ( STKS : sensitivity , 75 % ; specificity , 85 % ) ; the sensitivity of the CD3500 IG flag was 72 % with a specificity of 76 % ( STKS : sensitivity , 75 % : specificity , 73 % ) ; and the sensitivity of the NRBC flag was 43 % with a specificity of 94 % ( STKS sensitivity , 37 % ; specificity , 88 % ) .