Negative Finding :  A test result from a Laboratory  which, in accordance with the effective ISL and/or relevant Technical Document (s) and/or Technical Letter (s), concludes that no Prohibited Substance(s)  or its Metabolite(s)  or Marker(s)  or evidence of the Use of a Prohibited Method(s) , included in  the requested Analytical Testing  menu, were found in a Sample  based on the applied Initial Testing Procedure (s) or Confirmation Procedure (s).