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Linearity and calibration. A clinical laboratory perspective.
1Department of Pathology, University of Oklahoma, Oklahoma City 73034.
Archives of Pathology & Laboratory Medicine
|July 1, 1992
Summary
Calibration and linearity are crucial for accurate analytical results, especially for glutaraldehyde measured by high-performance liquid chromatography. Understanding their relationship defines the reportable range for quality testing.
Area of Science:
- Analytical Chemistry
- Biochemistry
Background:
- Accurate quantification in analytical chemistry relies on understanding the relationship between calibration and linearity.
- Glutaraldehyde analysis using high-performance liquid chromatography (HPLC) serves as a practical example.
Purpose of the Study:
- To elucidate the critical relationship between calibration and linearity in analytical methods.
- To define the concept of the reportable range in quantitative analysis.
Main Methods:
- The study uses glutaraldehyde assayed by high-performance liquid chromatography (HPLC) as a model system.
- Discussion focuses on the interplay between calibration, linearity, and the resulting analytical output.
Main Results:
- Adequate precision and minimal interference are prerequisites for establishing a meaningful linear range.
- Calibration directly influences the correspondence between the method's output and the true analyte concentration.
- The reportable range is established based on the assumption of linearity within defined error limits.
Conclusions:
- The relationship between calibration and linearity is paramount for achieving quality analytical results.
- Linearity objectively describes the method's response relative to analyte concentration.
- The reportable range ensures reliable results without specimen dilution.