U.S. federal trademark · Serial No. 75873921 · Reg. No. 2516396
PREPARING BLOOD AND OTHER BIOLOGICAL SAMPLES WITH KNOWN QUANTITIES OF DRUGS AND OTHER COMPOUNDS TO BE USED IN DETERMINING THE PROFICIENCY OF LABORATORIES IN DETECTING THE DRUGS AND OTHER COMPOUNDS AND REVIEWING THE RESULTS OF THE LABORATORIES' WORK AND DISTRIBUTING A SUMMARY OF ALL OF THE RESULTS TO THE PARTICIPATING LABORATORIES
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