From: Hookah smoking and cancer: carcinoembryonic antigen (CEA) levels in exclusive/ever hookah smokers
Intraassay precision1,2,3 | Interassay precision1,2,3 | ||||||
---|---|---|---|---|---|---|---|
 | Mean Concentration (ng/ml) | SD | CV |  | Mean Concentration (ng/ml) | SD | CV |
1 | 1.5 | 0.08 | 5.3% | 1 | 3.9 | 0.26 | 6.7 |
2 | 3.0 | 0.14 | 4.7% | 2 | 15 | 0.84 | 5.6 |
3 | 13 | 0.47 | 3.6% | 3 | 60 | 3.2 | 5.3 |
4 | 56 | 2.4 | 4.3% | 4 | 371 | 22 | 5.9 |
5 | 316 | 18 | 5.7% | Â | Â | Â | Â |