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Brookings, SD – Even at low levels, some contaminants like antibiotics can be harmful to animals and humans. To ensure that feed products are fit for consumption, regular quality assurance checks are necessary to test for these contaminants.

In feed manufacturing, carryover of specific antibiotics is possible between batches of different products. Feed manufacturers must follow strict maximum residue limit (MRL) guidelines to assure safe feed products. Antibiotics have different MRLs depending on what animal specie will consume the feed and where it is shipped and received.

Only comprehensive contaminant testing will determine the presence and level of antibiotics and other specific contaminants. After finding such impurities, you may be able to rework the product to acceptable levels or eliminate the relevant goods from the production and distribution chain.

SGS uses the latest antibiotic testing methods and cutting edge technology, including LC/MS/MS (liquid chromatography with tandem mass spectrometry) which is highly specific. Standards produced from reference materials allow quantification and identification of the specific antibiotics.  In addition, SGS has been selected by a major university for studies involving antibiotic residues in feed using these LC/MS/MS capabilities.  

Our contaminant testing laboratory in Brookings, S.Dak. operates under strict quality guidelines and is ISO 17025:2005 and ISO 9001:2008 accredited. Staffed by scientists and technicians with years of experience – as well as degrees in chemistry, microbiology and agronomy – our lab has also earned the approval of several feed associations. SGS adheres to strict proficiency testing and the highest industry standards

To find out how our contaminants testing services can protect the safety of your feed products, please contact the SGS Analytical Laboratory 605-692-7611 ext. 5 or email

For agriculture, SGS has a worldwide presence and conducts analytical testing, research and audit services for the seed, food, feed, ingredient, and co-products industries.

SGS is the world’s leading inspection, verification, testing and certification company. SGS is recognized as the global benchmark for quality and integrity. With more than 67,000 employees, SGS operates a network of over 1,250 offices and laboratories around the world.