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Table 1 Description of test materials

From: The use of digital PCR to improve the application of quantitative molecular diagnostic methods for tuberculosis

Material

LGC-assigned value

 

Inter laboratory study assigned value

 
 

Value

Expanded measurement uncertaintya

Value

Expanded measurement uncertaintya

Plasmid(copies/μL)

1.374 × 105

2.3 × 103

1.30 × 105

1.5 × 104

H37Rv gDNA(copies/µL)

6.83 × 104

3.4 × 103

4.8 × 104

9.0 × 103

BCG/ASM(copies/unit)

1.52 × 107

1.3 × 106

1.24 × 107

2.4 × 106

Total MTB control(copies/unit)

3.47 × 103

6.6 × 102

N/A

N/A

  1. aMeasurement uncertainty rounded outwards to 2 s.f. Concentration values given to the same integer as measurement uncertainties