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miu/ml) and very low levels of free estriol and afp .
levels designed to monitor the performance of screening, semi-quantitative and confirmatory drugs-of-abuse testing procedures . choose from a variety of controls with analytes at appropriate concentrations for a wide range of screening and confirmatory methods . they meet current samhsa* and other agency...
https://www.cardinalhealth.com/content/dam/corp/web/documents/catalog/cardinal-health-clinical-chemistry-catalog.pdf