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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