Cytoprotection is defined as an ability of pharmacologic agents, originally PGs, to prevent gastric and intestinal mucosal injury produced by a variety of ulcerogenic agents (eg, aspirin, indomethacin, bile acids) and by necrotizing agents (eg, boiling water, absolute alcohol, 0.6 mol/L HCl, 0.2 mol/L NaOH).
Definition of systematic error. : an error that is not determined by chance but is introduced by an inaccuracy (as of observation or measurement) inherent in the system.
Total allowable error is 20 mg/dLat 200 mg/dL, so the systematic error isacceptable, but inaccuracy consumes nearlyall of allowable error!The final criteria of acceptable methodperformance is total error. Total error is ameasure of systematic plus random errorand should be less than the CLIA total errorlimit.