Analytical Method Validation

Analytical Method Validation (AMV) is the documented evidence that a test method is fit for its intended use and produces consistent, reliable, and accurate results for quality decisions (e.g., release testing, stability, complaints). For regulated companies, AMV confirms the method can measure what it claims to measure under defined conditions, using appropriate performance checks such as accuracy, precision, specificity, linearity/range, and detection/quantitation limits (LOD/LOQ), as applicable.  

Practical example: If you use an HPLC assay to quantify an API or a critical impurity, validation demonstrates the method can separate interferences, give repeatable results across analysts/instruments, and reliably detect changes that could impact product quality. 

Related Terms 

HPLC (High-Performance Liquid Chromatography) 
HPLC is a laboratory analytical technique used to separate, identify, and quantify components in a sample. It is widely used in regulated industries to test product quality, such as measuring drug content, impurities, or degradation products. In the example, HPLC is the test method being validated to ensure it produces accurate and repeatable results. 

API (Active Pharmaceutical Ingredient) 
The API is the active substance in a drug or combination product that provides the intended therapeutic effect. In analytical testing, the API is often the primary component being measured to confirm correct strength, consistency, and stability. 

Why this matters for regulated companies: 
Validating an HPLC method used to measure an API ensures reliable release decisions, supports investigations, and meets regulatory expectations for data integrity and product safety.