Thyrostats (Urine)

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Thyrostats (Urine)
  • Method Used
  • Accreditation
  • Standard Turnaround Time
    10 working days

Fera’s food safety experts undertake veterinary medicine screening using proven testing methods to highlight the levels of thyrostats present within a range of food samples. Thyrostats inhibit the production of thyroid hormones, with the resulting side effect of this being weight gain, mainly due to increased water absorption and retention.

The use of thyrostats is banned in the EU Council directive 96/22/EC (29th April 1996), states: “member states shall prohibit the administering to a farm or aquaculture animal, by any means whatsoever, of substances having a thyrostatic action”. Fera’s screening procedures can provide the evidence required by regulators to verify that thyrostats are not being used and your food products are compliant with regulations.

Within this screen for thyrostats we include: 2-Thiouracil, 6-Methyl-2-thiouracil, 6-Phenyl-2-thiouracil, 6-Propyl-2-thiouracil, and Methimazole (Tapazole). Urine screening is undertaken for meat producing animals including cattle, sheep, and pigs. Results are typically returned within 10 working days after our scientists have received your sample.

The methods employed at our state-of-the-art suite have been validated in accordance with the principles set out in Commission Decision 2002/657/EC. For this test, the analytical method used at Fera is based on liquid chromatography–tandem mass spectrometry (LC–MS/MS), and analysis is accredited to ISO17025 by the United Kingdom Accreditation Service (UKAS).

Submitting your Sample

When submitting your sample please include the food sample submission form to allow us to process your samples efficiently. Failure to send a sample submission form may result in a delay of your sample being tested.

Download the food sample submission form here.






ISO17025 for Food Samples

Sample Information

200 - 250g

Minimum Sample Quantity (Batch Size)


Analytes Included in Screen

Methimazole (Tapazole)

Turnaround Time

10 working days

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