BQS Organic Blind Sample Program
False Positives & False Negatives
THEOPHYLLINE
Method: LC9017 Testid: 67494LCM56

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The SGPlot Procedure

Updated 08/31/2015

False Positive & Negative Listing for THEOPHYLLINE

Status Lab ID Spike Mix Reporting Level Analysis Date Result Conc. Expected Conc.
False Negative 20121040015 ERA 0823-11-05.2: 20 µl 41.5 05/01/12 < 41.5 82.5
  20123420072 Abs 071112: 10 µl & ERA 0507-12-06.2: 10 µl 41.5 12/14/12 < 41.5 41.75
  20132070033 ERA 0823-11-05.2: 15 µl & ERA 0507-12-06.1: 15 µl 41.5 08/02/13 < 41.5 61.875
  20132630004 ERA 0823-11-05.2: 15 µl & Abs 060112: 15 µl 41.5 10/29/13 < 58.2 61.875
  20133110111 ERA 0823-11-05.1: 15 µl & Abs 071112: 15 µl 41.5 11/20/13 < 41.5 62.625
  20133310033 Abs 071112: 20 µl & Abs 053112: 20 µl 41.5 12/05/13 < 83.4 83.5
  20140030015 Abs 071112: 20 µl & ERA 0507-12-06.2: 20 µl 41.5 01/16/14 < 80 83.5
  20140300038 Spex Organics T1120802015: 20 µl & Abs 071112: 20 µl 41.5 02/20/14 < 80 83.5
False Positive 20130100071 ERA 0823-11-05.1: 40 µl & Abs 060112: 40 µl 41.5 01/24/13 . 465 0

Updated 08/31/2015