PK/PD Modeling & Simulation

Saturable Drug Absorption

Nathan Teuscher

Drug absorption is the process by which a drug molecule moves from the site of administration to the systemic circulation. Following intravenous administration, there is no absorption process since the drug is directly introduced into the blood stream. However, for oral, intramuscular, subcutaneous, sublingual, buccal, transdermal, (and many other routes), there will be an absorption […]

Read More
Topics: PK/PD Modeling & Simulation

Nonlinear PK: What Does That Mean?

Nathan Teuscher

You may come across a phrase like the following and wonder what it means: “… this drug exhibits nonlinear pharmacokinetics …”. An example of a drug that has nonlinear pharmacokinetics (PK) is erythropoietin or EPO. You may have heard about EPO in the context of sports because it is a performance enhancing drug (PED). EPO […]

Read More
Topics: PK/PD Modeling & Simulation

Why Cmax is a Continuous Variable and Tmax is a Categorical Variable

Nathan Teuscher

The maximum observed concentration (Cmax) and the time of Cmax (tmax) are both obtained directly from the concentration-time data. In this post, I will review how to determine both of these parameters, and how to interpret information from the values. These two parameters are simple, but they pack some important information if you know how […]

Read More
Topics: PK/PD Modeling & Simulation

What is Quantification Anyway?

Nathan Teuscher

Bioanalytical analysis is a fundamental tool for the pharmacokineticist. The results of a bioanalysis are the source data for all pharmacokinetic work. Thus a clear understanding of the methodologies and challenges associated with the bioanalytical analysis science is of great benefit to a pharmacokineticist. As an example, I was recently working on the development of […]

Read More
Topics: PK/PD Modeling & Simulation
Learn More LinkedIn Twitter Facebook Email