What is calibration in the context of laboratory testing?

What is calibration in the context of laboratory testing?

• A. Replacing reagents
• B. Recording patient results
• C. Documenting SOPs
• D. Testing equipment with standard samples that have a known result.

Answer: (D)

Calibration is the process of ensuring an instrument’s measurements are accurate by testing it with standard references that have known results. In practice, you run calibrators or standard samples through the instrument and compare the instrument’s readings to the established true values. If the readings don’t match, you adjust the instrument or apply a correction so future results align with the reference values, and you document the calibration. This may involve generating a calibration curve across the measurement range and setting acceptable limits for what counts as a proper reading. This concept ensures measurements reflect true values and are traceable to recognized standards, which is essential for reliable patient results. For example, a spectrophotometer might be calibrated with solutions of known absorbance, or a chemistry analyzer might use calibrators with known concentrations to verify accuracy across its reporting range. Calibration is distinct from simply replacing reagents, recording patient results, or documenting SOPs. Those actions are part of routine maintenance, result handling, and documentation, while calibration specifically ties the instrument’s output to known reference values to maintain accuracy.

Calibration is the process of ensuring an instrument’s measurements are accurate by testing it with standard references that have known results. In practice, you run calibrators or standard samples through the instrument and compare the instrument’s readings to the established true values. If the readings don’t match, you adjust the instrument or apply a correction so future results align with the reference values, and you document the calibration. This may involve generating a calibration curve across the measurement range and setting acceptable limits for what counts as a proper reading.

This concept ensures measurements reflect true values and are traceable to recognized standards, which is essential for reliable patient results. For example, a spectrophotometer might be calibrated with solutions of known absorbance, or a chemistry analyzer might use calibrators with known concentrations to verify accuracy across its reporting range.

Calibration is distinct from simply replacing reagents, recording patient results, or documenting SOPs. Those actions are part of routine maintenance, result handling, and documentation, while calibration specifically ties the instrument’s output to known reference values to maintain accuracy.