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Efficiency of the polar compound test kit for reused frying oils (100 samples).
| Test kit | GC-column chromatography | Accuracy = 92.00% Sensitivity = 88.09% Specificity = 94.82% Positive predictive value = 92.50% Negative predictive value = 91.66% |
|
| + | − | ||
| +(≥25%) * | 37 | 3 | |
| −(<25%) ** | 5 | 55 | |
* ≥25% polar compounds by weight (positive), ** <25% polar compounds by weight (negative).
