Veterinary Drug Residues

Veterinary drugs are administered to animals as medicines or through “medicated supplements”, mixes of drugs in simple food media, given to animals mixed with feed.
Each medicinal product and medicated feed, suitable for the treatment of animals producing food, must be regularly authorized and registered.
It is unfortunately known that in some situations there is abuse in the use of veterinary drugs, or worse, a completely illegal use of forbidden drugs, employed both for therapy and to alter the normal physiology of the animals in order to obtain easy gains, even though illegal. To prevent the risk from an improper or fraudolent use of veterinary drugs it is necessary to implement a control system of the production “chain”, identifying “critical points” in the use of veterinary drugs, from the farm to the consumer’s table.The detection of drug residues plays a significant role considering globalization processes which allow an increasingly free movement of goods in countries with different and often conflicting regulations.

Drugs typologies

Neotron is able to determine a large number of drugs belonging to classes as sulfa drugs, tetracyclines, quinolones, fluoroquinolones, coccidiostat, antibiotics.

Analytical Techniques

The methods, single or multi-residue, employ the best and most advanced equipment in order to provide the highest reliability and lowest limits of quantification.
Techniques for analytical results:

  • LC-MS/MS
  • LC-Q/TOF


Accreditation by Accredia (Italian Accreditation Body) according to UNI CEI EN ISO/IEC 17025 standard.
[Accreditation number: 0026, Certificate first emission: 14/11/1991]

Authorization to perform qualitative and quantitative analysis in medicated feedstuffs, issued by Ministry of Health in date 18/10/1995.

The systematic involvement in Proficiency Test provides the external evidence about the test methods applied.
The full reports and the corresponding identification codes of Proficiency Test performed in the last year are available on this page for the downloading with a click on the code Ptest (in bold characters, see the following table).
Besides the matrix and the analytes analysed, the table shows also a synthesis of the obtained results in terms of z-score.

Legislative References

Commission Regulation (EU) No 37/2010 of 22 December 2009 on pharmacologically active substances and their classification regarding maximum residue limits in foodstuffs of animal origin.

Commission Regulation (EC) No 124/2009 of 10 February 2009 setting maximum levels for the presence of coccidiostats or histomonostats in food resulting from the unavoidable carry-over of these substances in non-target feed.


To request the last P-Tests results, please contact Quality Assurance.

Latest update: 09/11/2018 15:43:31