Urine Drug Testing Blood Alcohols Forensic Toxicology Esoteric Testing Tests Available   Methods Validation SOP preparations   Short Courses Educational Seminars Methods Training   Research Programs Services Northern Tier Research (NTR) is a premiere research facility in Northeaster Pennsylvania. The company provides a range of services to a variety of markets. NTR works in county and state government, medical examiners and private companies.             Services range from research lab testing, education, and training.
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