Sensitivity Delvotest® T for cow milk // ampoules

Detection limits for  Delvotest® T Ampoules in Cow milk 

The table presented below is an indicative list of the sensitivity of the Delvotest® T at control time for the most used antibiotics in the world. This list is not exhaustive. The test is sensitive to many more antibiotic drugs and sulfonamides.  Values presented in this list are ppb (parts per billion) equaling μg/Kg or ng/gram.

The best sensitivity is reached when using control time (CT). To test at control time, additionally to the milk you would like to test, perform one additional test with negative control milk, when the test containing the negative control milk turns yellow read the test result of the other milk. The sensitivity of the test when using a fixed reading incubation time (3hr15) can be decreased.

Delvotest® T is not sensitive to quinolones. Quinolones & fluoroquinolones can only be detected at levels much higher than EU MRLs.

 

 

Maximum Residue Limits (MRL) 
 for bovine milk (ppb)

Delvotest® T ampoules CCß** ppb

Antibiotic class

Antibiotic

EU

USA S/TL

CODEX

India FSSAI

cow milk

Penicillins

Amoxicillin

4

10

4

*

2

 

Ampicillin

4

10

*

10

2

 

Cloxacillin

30

10

*

10

10

 

Nafcillin

30

*

*

*

3

 

Oxacillin

30

*

*

*

3

 

Penicillin G

4

5

4

*

3

Tetracyclines

Chlortetracycline

100

300

100

100

150

 

Doxycycline 

*

*

*

*

50


Oxytetracycline

100

300

100

100

100

 

Tetracycline

100

300

100

100

80

Sulfonamides

Sulfadiazine

100

10

*

10

55

 

Sulfadimethoxine

100

10

*

*

40

 

Sulfadoxine

100

*

*

*

80


Sulfamethazine

100

10

25

25

125

 

Sulfathiazole

100

10

*

10

30

Cephalosporins

Cefalexin

100

*

*

*

30

 

Cefalonium

20

*

*

*

5

 

Cefazolin

50

*

*

*

3

 

Cefoperazone

50

*

*

*

20

 

Cefquinome

20

*

*

10

50

 

Ceftiofur

100

100

100

100

20


Cephapirin

60

20

*

10

5

 

Desacelylcephapirin

60

*

*

*

2

 

Desfuroylceftiofur

100

100

100

*

45

Macrolides

Erythromycin A

40

50

*

*

160

 

Spiramycin

200

*

200

*

1500


Tilmicosin

50

*

*

*

60

 

Tylosin A

50

50

100

*

35

Aminoglycosides

DH Streptomycin

200

125

200

20

700

 

Gentamycin

100

30

200

*

100

 

Neomycin B

1500

150

1500

1500

140

 

Streptomycin

200

*

200

20

700

Others

Chloramphenicol

*

*

0

*

4000

 

Clavulanic Acid

200

*

*

*

700

 

Dapsone

*

*

*

*

10

 

Lincomycin

150

*

150

150

275

 

Pirlimycin

100

400

100

*

300

 

Rifaximin

60

*

*

*

40

 

Trimethoprim

50

*

*

10

110


* not listed, legislation regulation normally restricts the use: not to be used for lactating animals.

** CCꞵ  detection capability is the lowest concentration where a substance can be detected with 95% probability.

 Delvotest® T sensitivity listed as CCβ as determined (according to European legislation) by AFNOR validation study 2020-2021.

 

Legislation regulation references

EU-MRL         EC 37/2010

USA S/TL       FDA M-I-18-9   2018

CODEX          CX/MRL 2-2018

FSSAI            Compedium_Contaminants_Regulation_20_08_2020



SAQs: 

  • What is the sensitivity of T ampoules?
  • What antibiotics do T ampoules detect? 
  • Can Delvotest® T detect fluoroquinolones (antibiotic) in milk?