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Table 1 Categorical Comparisons of the Susceptibility Testing Results of Disk Diffusion with Agar Dilution

From: Comparing the disk-diffusion and agar dilution tests for Neisseria gonorrhoeae antimicrobial susceptibility testing

Disk diffusion, zone diameter Agar dilution, MIC
   Susceptible Non-Susceptible  
Ceftriaxone (CRO)   <=0.25 ug/ml >0.25 ug/ml Totals
Susceptible > = 35 mm 97 (84.4%) 0 (0.00%) 97 (84.4%)
Non- Susceptible <35 mm 8 (7.0%) 10 (8.7%) 18 (15.6%)
  Totals 105 (91.3%) 10 (8.7%) 115 (100.0%)
Cefixime (CFX)   <=0.25 ug/ml >0.25 ug/ml Totals
Susceptible > = 31 mm 94 (81.7%) 0 (0.0%) 94 (81.7%)
Non-Susceptible <31 mm 9 (7.8%) 12 (10.4%) 21 (18.3%)
  Totals 103 (89.6%) 12 (10.4%) 115 (100.0%)
Cefpodoxime (CPD)   <=0.5 μg/ml >0.5 μg/ml Totals
Susceptible > = 29 mm 58 (50.4%) 7 (6.1%) 65 (56.5%)
Non-Susceptible <29 mm 4 (3.5%) 46 (40.0%) 50 (43.5%)
  Totals 62 (53.9%) 53 (46.1%) 115 (100.0%)