Table 2

Reproducibility data observed in a cancer patient, a smoker and a non-smoker

Counts per second (CPS)

CEA (ng/ml)

Patient with high CEA

Replicate-1:

10606939

67.02

Replicate-2:

11254190

71.17

Replicate-3:

10843538

68.50

Replicate-4:

11468146

72.67

Mean ± SD

11043203 ± 389565.76

69.84 ± 2.55

%CV

3.53

3.65

Smoker

Replicate-1:

912044.4

4.82

Replicate-2:

970260

5.23

Replicate-3:

989665

5.3

Mean ± SD

957323 ± 40395.28

5.12 ± 0.259

%CV

4.2

5.06

Non-smoker

Replicate-1:

409945.7

1.603

Replicate-2:

427858

1.718

Replicate-3:

432136.58 (1.01)

1.746

Mean ± SD

423313.3 ± 11772.8

1.689 ± 0.076

%CV

2.78

4.49

Sajid et al. Harm Reduction Journal 2008 5:19   doi:10.1186/1477-7517-5-19