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Detection sensitivities of AiM BRT Testsystems towards selected
antiinfectives in cow milk, µg/kg (ng/ml; ppb)
Substance
BRT MRL-Screening Test
BRT
Inhibitor Test
BRT
Inhibitor Test with prediffusion
MRL
(2377/90 EEC)
Penicillines
Amoxicillin
1 – 2
2 – 3
3 – 4
4
Ampicillin
2 – 3
2 – 3
2 – 3
4
Benzylpenicillin
1,5 – 2
2 – 3
2 – 3
4
Cloxacillin
10
20 – 30
20 – 30
30
Dicloxacillin
5
10 – 20
10 – 20
30
Nafcillin
5
10 – 15
10 – 15
30
Oxacillin
5
10 – 20
10 – 20
30
Piperacillin
5
5 – 10
5 – 10
undetermined
Cephalosporines
Cefapirin
5
5
5
60
Cefazolin
25
25
25
50
Cefoperazon
20
20 – 30
20 – 30
50
Cefalexin
200
300
300
100
Ceflonium
5
10
10
20
Cefquinom*
40 – 60
20
Ceftiofur*
70 – 100
100
Cefuroxime
100
100 – 200
100 – 200
undetermined
Macrolides
Erythromycin
40
40 – 60
60 – 100
40
Spiramycin
200 – 400
200 – 400
400 – 500
200
Tylosin
25
25 – 50
30 – 50
50
Tetracyclines
Oxytetracycline
250 – 500
500 – 750
750 – 1000
100
Tetracycline
100 – 200
200 – 400
200 – 500
100
Sulfonamides
Sulfadiazine
100
500 – 750
1000 – 1500
100
Sulfadimethoxine
100
500 – 750
1000 – 1500
100
Sulfamethazine
100 – 300
500 – 750
1500 – 2500
100
Sulfathiazole
100
200 – 400
500 – 1000
100
Aminoglycosides
DH/Streptomycin
400 – 600
1000
1000
200
Gentamicin
100 – 200
200 – 300
300 – 400
100
Neomycin
500
500 – 750
500 – 750
1500
Others
Lincomycin
75 – 150
75 – 150
150 – 300
150
Chloramphenicol
2500 – 5000
5000 – 7500
7500
illegal
Evaluation 10/2003: reading with ELISA Reader
measuring wavelength 450 nm, reference wavelength 620 nm
* Evaluation 2001