Module CC-01 · Version 1.1
How an Analyzer Produces a Result
Trace a chemistry result from specimen aspiration through signal generation, calculation, flags, and verified release, and learn where an otherwise plausible number can become unreliable before it ever fails a QC rule.
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Who this module is for
Clinical laboratory scientists and students entering automated clinical chemistry, foundation level
Learning objectives
- Distinguish specimen, reagent, calibrator, and control roles on the same analytic path
- Explain how a physical or chemical signal becomes a reported concentration or activity
- Identify steps where an otherwise plausible result can become unreliable with no QC failure
How completion works
Mark every required section done and answer every knowledge check in those sections correctly. The final save completes the module automatically.
Sources
19 sources
1. 42 CFR 493.1250, Condition: Analytic systems. Cornell LII e-CFR mirror.
Source note · federal regulation
2. 42 CFR 493.1253, Standard: Establishment and verification of performance specifications.
Source note · federal regulation
3. 42 CFR 493.1255, Standard: Calibration and calibration verification procedures.
Source note · federal regulation
4. 42 CFR 493.1256, Standard: Control procedures.
Source note · federal regulation
5. 42 CFR 493.1281, Standard: Comparison of test results.
Source note · federal regulation
6. 42 CFR 493.1291, Standard: Test report.
Source note · federal regulation
7. College of American Pathologists, Laboratory General Checklist, item GEN.43875 (autoverification validation).
Source note · accreditation standard
8. Clinical and Laboratory Standards Institute, EP19, A Framework for Using CLSI Documents to Evaluate Medical Laboratory Test Methods, 3rd ed., 2022.
Source note · consensus standard
9. Clinical and Laboratory Standards Institute, C24, Statistical Quality Control for Quantitative Measurement Procedures, 4th ed., 2016.
Source note · consensus standard
10. NIDDK/Assay Guidance Manual, Basics of Assay Equipment and Instrumentation for High Throughput Screening. NCBI Bookshelf NBK92014.
Source note · peer-reviewed literature
11. IUPAC Gold Book, "absorbance."
Source note · peer-reviewed literature
12. Apple FS et al. (IFCC Scientific Division Working Group on Selective Electrodes), Recommendations for measurement of and conventions for reporting sodium and potassium by ion-selective electrodes. PubMed 11140625.
Source note · professional society guidance
13. Effects of total plasma protein concentration on plasma sodium, potassium and chloride by indirect ISE. PubMed 16548813.
Source note · peer-reviewed literature
14. Correcting Potassium Concentrations Measured in Hemolyzed Serum, Plasma, and Whole Blood Samples. J Appl Lab Med. 2024.
Source note · peer-reviewed literature
15. Variable Potassium Concentrations: Which Is Right and Which Is Wrong? Lab Med. 2017;48(2):183.
Source note · peer-reviewed literature
16. National Kidney Foundation, CKD-EPI Creatinine Equation (2021).
Source note · professional society guidance
17. CDC NHANES Laboratory Procedure Manual, Glucose (hexokinase method).
Source note · federal guidance
18. FDA 510(k) Decision Summary, ISE module (K140373).
Source note · federal regulation
19. Westgard JO, Barry PL, Hunt MR, Groth T. A multi-rule Shewhart chart for quality control in clinical chemistry. Clin Chem. 1981;27(3):493-501.
Source note · peer-reviewed literature