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Breakpoints
Range tested
of E. coli
Antimicrobial Subclass
Antimicrobial Agents
References
(§¡/ml)
(§¡/ml)
1)
Gentamicin (GEN)
1-64
? 16
M100
Aminoglycosides
2)
Streptomycin (STR)
16-128
? 32
NARMS
Aminopenicillin
Ampicillin (AMP)
2-64
? 32
M100
? 4
Carbapenem
Meropenem (MERO)
0.25-4
M100
Ceftazidime (CAZ)
1-16
? 16
M100
Cephalosporin¥²
Ceftiofur (XNL)
0.5-8
? 8
NARMS
Cephalosporin¥³
Cefepime (FEP)
0.25-16
? 16
M100
Cephamycin
Cefoxitin (FOX)
1-32
? 32
M100
Fluoroquinolone
Ciprofloxacin (CIP)
0.12-16
? 4
M100
Sulfisoxazole (FIS)
16-256
? 512
M100
Folate pathway inhibitor
Trimethoprim/
0.12/2.38-4/76
? 4/76
M100
Sulphamethoxazole (SXT)
Phenicols
Chloramphenicol (CHL)
2-64
? 32
M100
3)
Polymyxins
Colistin (COL)
2-16
? 4
EUCAST
? 32
Quinolone
Nalidixic acid (NAL)
2-128
M100
Tetracyclines
Tetracycline (TET)
2-128
? 16
M100
¥â-lactam/¥â-lactamase inhibitor
Amoxicillin/
2/1-32/16
? 32/16
M100
combinations combinations
Clavulanic acid (AUG2)
1) Clinical Laboratory Standards Institute, M100, 2020
2) National Antimicrobial Resistance Monitoring System, 2015
3) European Committee on Antimicrobial Susceptibility Testing, 2018
¶ó. Á¤µµ°ü¸®(Quality Control)
E. coli ATCC 25922, S. aureus ATCC 25923 ±ÕÁÖ¸¦ ÀÌ¿ëÇÏ¿© Clinical Laboratory Standard
Institute(CLSI)¿¡¼ Á¦½ÃÇÑ Ç¥ÁرÕÁÖ ¹üÀ§¿Í ºñ±³ÇÏ¿´´Ù.
Breakpoints
Range tested
of E. coli
Antimicrobial Subclass
Antimicrobial Agents
References
(§¡/ml)
(§¡/ml)
1)
Gentamicin (GEN)
1-64
? 16
M100
Aminoglycosides
2)
Streptomycin (STR)
16-128
? 32
NARMS
Aminopenicillin
Ampicillin (AMP)
2-64
? 32
M100
? 4
Carbapenem
Meropenem (MERO)
0.25-4
M100
Ceftazidime (CAZ)
1-16
? 16
M100
Cephalosporin¥²
Ceftiofur (XNL)
0.5-8
? 8
NARMS
Cephalosporin¥³
Cefepime (FEP)
0.25-16
? 16
M100
Cephamycin
Cefoxitin (FOX)
1-32
? 32
M100
Fluoroquinolone
Ciprofloxacin (CIP)
0.12-16
? 4
M100
Sulfisoxazole (FIS)
16-256
? 512
M100
Folate pathway inhibitor
Trimethoprim/
0.12/2.38-4/76
? 4/76
M100
Sulphamethoxazole (SXT)
Phenicols
Chloramphenicol (CHL)
2-64
? 32
M100
3)
Polymyxins
Colistin (COL)
2-16
? 4
EUCAST
? 32
Quinolone
Nalidixic acid (NAL)
2-128
M100
Tetracyclines
Tetracycline (TET)
2-128
? 16
M100
¥â-lactam/¥â-lactamase inhibitor
Amoxicillin/
2/1-32/16
? 32/16
M100
combinations combinations
Clavulanic acid (AUG2)
1) Clinical Laboratory Standards Institute, M100, 2020
2) National Antimicrobial Resistance Monitoring System, 2015
3) European Committee on Antimicrobial Susceptibility Testing, 2018
¶ó. Á¤µµ°ü¸®(Quality Control)
E. coli ATCC 25922, S. aureus ATCC 25923 ±ÕÁÖ¸¦ ÀÌ¿ëÇÏ¿© Clinical Laboratory Standard
Institute(CLSI)¿¡¼ Á¦½ÃÇÑ Ç¥ÁرÕÁÖ ¹üÀ§¿Í ºñ±³ÇÏ¿´´Ù.
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