Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Pitfalls in pharmacokinetic multicompartment analysis

E Liang1, H Derendorf

  • 1Department of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville 32610, USA.

Journal of Pharmacokinetics and Biopharmaceutics
|October 31, 1998
PubMed
Summary

Visual inspection of pharmacokinetic profiles prevents errors when using two-compartment models. Avoid two-compartment models without clear biphasic profiles to ensure accurate drug parameter estimation and predictions.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Identification of nutritional risk factors and construction of a nomogram prediction model in AIDS patients.

Frontiers in nutrition·2026
Same author

Isolation, identification and antibacterial activity of endophytes from the seeds of Panax japonicus.

PloS one·2025
Same author

Bioinformatics Analysis and Functional Verification of Phytoene Synthase Gene <i>Pj</i>PSY1 of <i>Panax japonicus</i> C. A. Meyer.

Current issues in molecular biology·2025
Same author

Physiological, biochemical and transcriptomic analyses reveal the mechanism of variation in color traits in Panax japonicus fruits.

Scientific reports·2025
Same author

The current attitudes and practices of dentists in Australia towards composite repair: A cross-sectional survey study.

Australian dental journal·2024
Same author

Inhibitor of apoptosis proteins (IAP) inhibitor APG-1387 monotherapy or in combination with programmed cell death 1 (PD-1) inhibitor toripalimab in patients with advanced solid tumors: results from two phase I trials.

ESMO open·2024

Area of Science:

  • Pharmacokinetics
  • Drug Metabolism and Pharmacokinetics
  • Systems Pharmacology

Background:

  • Two-compartment pharmacokinetic (PK) models are frequently used to describe drug disposition.
  • Inaccurate PK parameter estimation can lead to erroneous predictions of drug behavior.
  • First-order absorption is a common assumption in these models.

Purpose of the Study:

  • To illustrate the problem of parameter estimation errors in two-compartment PK models.
  • To provide a simple method for preventing incorrect PK parameter estimation.
  • To investigate the origin of estimation ambiguities.

Main Methods:

  • Fitting a two-compartment PK model with first-order absorption to drug blood level data.
  • Visual inspection of PK profiles to assess model suitability.
  • Analysis of microconstants (ka, k12, k21, k10) and hybrid constants (A, B) to understand parameter ambiguity.

Main Results:

  • Considerable errors in PK parameter estimates can occur when fitting a two-compartment model.
  • Visual inspection of PK profiles is crucial; a clear biphasic profile is necessary for valid interpretation.
  • Parameter errors are irrelevant for predicting blood levels over the same time-span but critical for other predictions.

Conclusions:

  • Visually assessing PK profiles prevents misinterpretation of two-compartment model parameters.
  • Applying two-compartment models without clear biphasic evidence can lead to significant predictive errors.
  • Understanding the interplay of PK constants is key to identifying potential estimation issues.

Related Experiment Videos