5.3.3  Acceptance of Samples  for Analysis  The Laboratory  shall analyze each Sample received, unless the Sample meets any of the following  conditions : - In cases  where the Laboratory  receives two (2) urine Samples , which are linked to a single Sample Collection Session  from the same Athlete  according to the Doping Control  Forms (DCF), the Laboratory  shall analyze both Samples  collected, unless otherwise instructed by the Testing Authority ; [Comment: The Laboratory  may combine Aliquots  from the two (2) Samples, if necessary, in order to have sufficient volume to perform the required Analytical Testing Procedure (s).]