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Table 4 Inter-laboratory validation of quantitative assay of Cortex Magnoliae Officinalis

From: Quality assurance for Chinese herbal formulae: standardization of IBS-20, a 20-herb preparation

  Percentage content (%) ADM (%)
  CUHK result UWS result  
Honokiol 0.8355 0.8427 0.43
Magnolol 1.4815 1.5148 1.11
  1. Note: ADM (absolute deviation from mean) = (| D1 - mean|/mean) × 100%, where mean = (D1+D2)/2; D1 = the first value, D2 = the second value
  2. CUHK: Chinese University of Hong Kong
  3. UWS: University of Western Sydney