A plant medicine that has been prepared to ensure a more uniform product (and also confirms its identity and purity) for testing in clinical trials or for commercial production. This means the product contains a fixed amount of the known active ingredients for a specific disorder. Since chemicals in plants naturally vary, this is more reliable in a clinical trial setting. However, since the concentration and ratio of individual plant ingredients can be different in standardized extracts compared to the original whole plant extract, it does not necessarily reflect the total traditional medicinal benefit of the plant.
In test construction, the process of trying the test out on a sample to establish standard methods of administration, scoring, and interpretation.
A statistical procedure for permitting valid comparisons among several populations. The procedure involves adjustments so that the rates of occurrence of some variable (a disease, for example, by age and sex) are applied to a “standard” distribution of persons by age and sex. Standardization is basically an application of weighting of averages.
The procedure of establishing predefined standards and protocols for a test serves as a benchmark for future test results, providing a standardized reference point.
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