Area Under the Curve From Dosing to Last Concentration of Unbound Drug

**Semantic type:** Quantitative Concept

**Definition:** The portion of the area under the curve (AUC) from the time of dosing to the last measurable concentration, represented by the unbound fraction of drug. (CDISC)

**Synonyms:** - AUC to Last Nonzero Conc, Unbound Drug - AUC to Last Nonzero Conc, Unbound Drug - AUCLSTUB