TABLE 3.

Resolution of qualitatively discordant MAID versus Focus ELISA results

AnalyteDiscordant patternOther results support
MAID resultELISA resultNo. of seraMethodNo. of seraExplanation
PT IgGNormalIncreased3Unclear2FHA IgG concordant increased, but PT IgA concordant normal or discordant
MAID1All other analytes concordant normal
PT IgAIncreasedNormal10Unclear1PT IgG discordant
MAID7PT IgG concordant increased
ELISA2All other analytes concordant normal
NormalIncreased3MAID2All other analytes concordant normal
ELISA1PT IgG concordant increased
FHA IgGNormalIncreased14MAID11All other analytes concordant normal
ELISA3PT IgG concordant increased
IncreasedNormal1MAID1PT IgG concordant increased
FHA IgAIncreasedNormal11Unclear2FHA IgG discordant
MAID6FHA IgG concordant increased
ELISA3All other analytes concordant normal
NormalIncreased2MAID1FHA IgG concordant normal
ELISA1FHA IgG concordant increased