PK Data Explained

Pharmacokinetics, or PK, is the monitoring of the concentration level over time of an analyte within a human (or animal) body. The analyte is typically an active ingredient of a drug, or an element such as sodium or potassium, or a chemical compound which occurs naturally in blood or other body fluids, such as creatinine or bilirubin. PK data collection for an active drug compound is performed routinely in all clinical trials since it is a critical part of measuring the safety and efficacy of an experimental treatment and in determining the treatment dose amount, frequency, and time-release profile.