Mediterranean

For the majority of our clients, each batch is screened.  If the client wishes to only perform a confirmation, then we offer this service as well.

Screening is performed on one of our Olympus instruments.  Each screening batch will contain one blind Quality Control (QC) sample.  The open QC portion of the batch is analyzed before and after each batch.  This set includes one drug-free urine control (certified by GCMS), one control at 75% of the cutoff, and another at 125% of the cutoff. The drug-free control must screen negative, the 75% threshold control must screen negative but must be less negative than the drug free control, and the 125% threshold control must screen positive. 

Blind samples are prepared in-house. All are prepared in a urine matrix and are acquired from a commercial manufacturer.  If quality control criteria are not met aliquots must be rescreened. Any aliquots in the batch which are not bracketed by acceptable quality control must be repeated.