Related Experiment Video
Updated: May 7, 2026

Reproducibility and Harmonization in Research Using Biological Standards: The Example of Platelet Agonist Collagen-Related Peptide
Published on: August 4, 2023
Basics of compounding: potency and stability testing
1International Journal of Pharmaceutical Compounding, Edmond, Oklahoma 73034, USA. lallen@ijpc.com
Abstract:
Potency (strength) tests are designed to determine how much of an active drug is in a sample. Stability tests are used to determine an expiration date of a product or a beyond-use date of a preparation. Being able to employ the proper method to determine potency or stability is the key to understanding the difference between potency testing versus stability testing. In order to determine potency, a method may or may not be stability indicating. When determining stability, the method must be stability indicating. When using a stability-indicating method, both potency and stability can be determined. Quality-assurance programs are essential to establishing standards for compounded preparations. It is important that compounding pharmacists understand the differences between potency and stability tests and that these tests are made an integral part of the quality-assurance program.
More Related Videos
06:12Using Multiple Light Scattering to Examine the Stability of Phyllanthus emblica L. Extracts Obtained with Different Extraction Methods
Published on: April 14, 2023
11:27A Package of Established Analytical Tools to Investigate the Solid-State Alteration of Lipid-Based Excipients
Published on: August 9, 2022
Related Concept Videos
Drug Product Stability
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry
Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence
In Vitro Drug Dissolution: Compendial Testing Models I
Pharmaceutical Alternatives: Polymorphic Form-Related and Particle Size-Related Therapeutic Nonequivalence
Drug Dissolution: Requirements and Profile Comparison