Allowable analytical error is:

Allowable analytical error is:

• A. A combination of random and systematic error
• B. Best if it is greater than the total error
• C. Used only for research and initial evaluation studies
• D. Published by the CDC for an array of clinical tests

Answer: (A)

Allowable analytical error is the maximum total error a laboratory is willing to accept for a measurement, reflecting the sum of both random (imprecision) and systematic (bias) components. Since a test result can drift from the true value due to scatter in repeated measurements and a consistent offset from the true value, the allowable error must encompass both sources of error. If the observed total error exceeds this limit, the result could compromise clinical decisions, so the limit serves as a clinically acceptable threshold. These limits are used in routine testing and are set by regulatory and professional bodies (not specifically published by the CDC for all tests). That combination of random and systematic error best describes allowable analytical error.

Allowable analytical error is the maximum total error a laboratory is willing to accept for a measurement, reflecting the sum of both random (imprecision) and systematic (bias) components. Since a test result can drift from the true value due to scatter in repeated measurements and a consistent offset from the true value, the allowable error must encompass both sources of error. If the observed total error exceeds this limit, the result could compromise clinical decisions, so the limit serves as a clinically acceptable threshold. These limits are used in routine testing and are set by regulatory and professional bodies (not specifically published by the CDC for all tests). That combination of random and systematic error best describes allowable analytical error.