The admissibility of positive EMIT results as scientific evidence: counting facts, not heads.
D005554:Forensic Medicine; D006801:Humans; D007124:Immunoenzyme Techniques / Q000592:standards*; D008297:Male; D008403:Mass Screening / Q000331:legislation & jurisprudence; D008404:Massachusetts; D011330:Prisons / Q000331:legislation & jurisprudence*; D019966:Substance-Related Disorders / Q000652:urine*