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definitions [2025/02/24 06:51] admin |
definitions [2025/02/24 10:48] (current) admin |
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| + | ====Common Statistic of The Clinical Biochemistry==== | ||
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| **Inaccuracy = Bias =** (Laboratory Value - True Value) | **Inaccuracy = Bias =** (Laboratory Value - True Value) | ||
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| True Value may be "EQAS Mean of Comparison" | True Value may be "EQAS Mean of Comparison" | ||
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| + | ---- | ||
| **Imprecision = CV% =** (IQC-SD x 100 / IQC-Mean) | **Imprecision = CV% =** (IQC-SD x 100 / IQC-Mean) | ||
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| + | ---- | ||
| **Total Error % (TE % ) =** (Bias % + 2CV%) | **Total Error % (TE % ) =** (Bias % + 2CV%) | ||
| **Total Error (TE) =** (Bias + 2SD) | **Total Error (TE) =** (Bias + 2SD) | ||
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| + | ---- | ||
| + | **Standard Deviation Index = SDI =** (IQC Value - IQC Mean) /IQC-SD | ||
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| + | ---- | ||
| + | **Z Score =** (EQAS Value - EQAC Mean of Comparison) /EQAS-SDPA | ||
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| + | ---- | ||
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| + | ** Factor of The Analyte =** Concentration of Calibrator / (O.D. of Calibrator - O.D. of Blank ) | ||
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| + | **Concentration of Substrate / Analyte =** (O.D. of Substrate - O.D. of Blank ) x Concentration of Calibrator / (O.D. of Calibrator - O.D. of Blank ) | ||
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| + | **Concentration of Substrate / Analyte =** (O.D. of Substrate - O.D. of Blank ) x Factor | ||
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| + | **Delta OD =** (OD at 60 second) - (OD at 0 Second) = Difference of OD in 60 Second (1 minute) interval | ||
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| + | Note : In case of kinetic or End-Point kinetic method, Delta OD will be used instead of OD | ||
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