substances prohibited In-Competition  only), will normally be present in estimated concentrations greater than (>) 120% of the applicable Minimum Reporting L evel;    ISL – January 2021 Page 123 of 160 o Concentrations of the Prohibited Substance  and/or its Metabolite (s) or Marker (s) below (<) 50% of the applicable MRPL  (for Non-Threshold Substances  prohibited at all times with no Minimum Reporting Levels , for educational purposes).