TABLE 1.

Accuracy of bioluminescent antimicrobial susceptibility assay by antibiotic

AntibioticNo. of specimensa% CorrectbAccuracy (%)Tc
SRSR
Ampicillin3252759686−1.231
Gentamicin7010949092−0.773
Cephalothin62118110090−1.372
Ciprofloxacin6221989597−0.300
Nitrofurantoin709847881−1.447
TMP-SMX5627849690−0.455
Vancomycin916710083−0.929
    Overalld361131879591Aboved
    Naïve overalle361131952158−0.455e
  • a Number of specimens containing antibiotic-susceptible (S) and antibiotic-resistant (R) organisms.

  • b Calculated by dividing the number of specimens predicted correctly by the number tested.

  • c T, threshold log RLU difference from control result without antibiotics.

  • d Across all antibiotics by the use individual thresholds for each antibiotic.

  • e By the use of one common threshold for all antibiotics.