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Table 11 Classification scheme of MAP status from ELISA and fPCR results in a study looking at changes in apparent prevalence of MAP infection in a NZ pastoral dairy herd over 4 years of intervention

From: Control of Mycobacterium avium subsp. paratuberculosis infection on a New Zealand pastoral dairy farm

TestMAP status
ELISA
Paralisa™IDEXXa 
JohninaPPAaAg1Del1a  
<  50 EU<  50 EU<  50 EUNot DetectedNot Detected
50–100 EU in any testLowLow
101–150 EU in any testModerateModerate
>  150 EU in any testHighHigh
fPCR
 <  1 × 103 genomes / mLNot Detected
 ≥ 1 × 103 - < 1 × 104 genomes / mLModerate
 ≥ 1 × 104 genomes / mLHigh
  1. aELISA results were interpreted in parallel
  2. bfPCR results were interpreted in series with ELISA results