Table II Precision and accuracy of S. aureus quantitative measurements. Three technical replicates were performed for n = 5 identical samples at two concentration levels. S.D. = standard deviation; % RSD = % relative standard deviation
S. aureus Measurements (CFU ml−1)
Spike concentration (CFU ml−1)Intra-peptide concentration (mean ± S.D.) (% RSD)Inter-peptide concentration (mean ± S.D.) (% RSD)Spike concentration (CFU ml−1)Intra-peptide concentration (mean ± S.D.) (% RSD)Inter-peptide concentration (mean ± S.D.) (% RSD)
n = 5
SIAQSIEK1.00 × 1051.30 × 105 ± 1.16 × 104 (8.9)1.31 × 105 ± 1.73 × 103 (1.3)1.00 × 1069.70 × 105 ± 1.04 × 105 (10.7)1.01 × 106 ± 1.16 × 104 (8.9)
LGVILPVTK1.00 × 1051.33 × 105 ± 2.00 × 104 (15.0)1.00 × 1061.02 × 106 ± 1.35 × 105 (13.2)
LIYGIPQLIEYK1.00 × 1051.30 × 105 ± 1.70 × 104 (13.1)1.00 × 1061.04 × 106 ± 1.53 × 105 (14.7)