Method Validation vs. Verification
Why a method’s published reputation does not automatically establish fitness in every laboratory, matrix, or range.
This article explains analytical evidence and reporting. It does not provide medical advice, product-use instructions, treatment recommendations, or conclusions about individual safety.
01
Two related questions
Validation asks whether a method is fit for its intended analytical purpose. Verification asks whether a laboratory can achieve the expected performance when it adopts an established method under its own conditions.
The terminology varies across fields, so a defensible report should state what was evaluated rather than relying on the label alone.
02
Performance is contextual
Selectivity, calibration behavior, precision, bias, working range, detection capability, and robustness may be relevant. The required evidence depends on the intended measurement and the consequences of error.
A method that works in one matrix may encounter interferences or recovery problems in another. Instrument platform, preparation, operators, and environmental conditions can also matter.
03
Questions for a methods section
Ask whether acceptance criteria were defined before evaluation, whether reference materials or suitable controls were used, and whether the tested range includes the reported samples.
A concise method name is not a substitute for performance evidence. Equally, a long protocol does not prove that the method is appropriate.
SOURCES
References
- Eurachem Guide — Fitness for Purpose of Analytical MethodsEurachem
- FDA FVM Program — Guidelines for the Validation of Chemical Methods, 3rd editionU.S. Food and Drug Administration
References are classified as official standards-body, government, or metrology guidance. Inclusion does not imply endorsement of GG Labs Research or Golden Goose Labs.