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Pharmacokinetics Concentrations (PC) is a findings domain used for the concentrations of drugs or metabolites in biological fluids (e.g. ,, blood, urine, saliva, breast milk ) or tissues as a function of time. The measuring of nicotine blood concentrations after a subject is exposed to a tobacco product is often performed.    Information Information about sampling for pharmacokinetic (PK) concentration is collected on CRFs with the goal to reconcile or link sampling information (e.g., collection timing and specimen volumes) with PK concentration results provided by the laboratory. Tabulation PC records are compiled when joining CRF sampling information and PK concentration results. This is similar to scenario 1 in Section 2.7.6.9,  CDASH Laboratory Test Results (LB).

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