Research Article
Estimation of Cutoff Values of Cotinine in Urine and Saliva for Pregnant Women in Poland
Table 2
Recovery of cotinine in urine and saliva samples.
| | Expected value [ng/mL] | Measured* [ng/mL] | Recovery [%] |
| Urine Before spiking 0.884 ± 0.055 ng/mL | 0.8 | | 78.5 | 40 | | 97 | 80 | | 95.6 | 120 | | 94.3 | 2000 | | 98.8 | 3800 | | 98.1 |
| Saliva Before spiking 0.701 ± 0.041 ng/mL | 0.4 | | 100.5 | 20 | | 100.3 | 40 | | 95.9 | 80 | | 100.5 | 120 | | 94.7 | 500 | | 101.1 | 900 | | 100.7 |
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All values are means ± SD.
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