A value near 100% suggests that the preparation and measurement process obtained an amount close to what was expected. A lower result can signal incomplete extraction, analyte loss, or degradation, whereas a higher result may indicate contamination or measurement bias. Interpreting the direction and size of the difference helps identify weaknesses in the analytical process.
Fortified samples contain an added, known amount of the substance being analyzed, allowing the recovered amount to be compared with a defined expectation. This design helps assess both extraction performance and measurement performance rather than relying only on an untreated sample. The result can show whether sample preparation or subsequent analysis is contributing to analyte loss.
Extraction determines how effectively the substance is removed from the sample or preparation, while measurement determines how accurately the recovered material is quantified. Inefficient extraction may produce a lower result even when measurement is reliable. Conversely, contamination or measurement bias can produce an unusually high or low value despite effective extraction.
A typical assessment begins by adding a known amount of the substance to a sample, preparation, or analytical matrix. The sample then undergoes the intended preparation and measurement procedure. The measured recovered amount is compared with the expected amount added or originally present, and the result is expressed as a percentage for evaluating process performance.
During method validation, recovery percentage provides evidence about whether a procedure obtains and measures the substance effectively. Analysts can examine results from fortified samples to identify losses during preparation or bias during measurement. This information helps determine whether the method is suitable for generating chemically meaningful analytical results and supports assessment of its accuracy.
Quality-control assessments use recovery percentage to monitor whether sample preparation and analytical measurement continue to perform as expected. Results near the expected level suggest limited loss and consistent processing, while unusual low or high values can prompt investigation of extraction, degradation, contamination, or measurement bias. This makes recovery a practical indicator of procedural performance.