Canis ISSN: 2398-2942 Sick euthyroid factor assay Contributor(s): Vetstream Ltd Overview Sampling Tests Overview Low thyroxine Thyroxine assay occurs in dogs who are sick for other reasons thus causing confusion when interpreting results for diagnosis of hypothyroidism. Sick euthyroid factor offers a way to distinguish between sick and healthy dogs. Sampling This article is available in full to registered subscribers Sign up now to purchase a 30 day trial, or Login Tests Availability Only available at CSL, Cambridge in UK. This test is in its development phase and veterinarians should contact laboratory to discuss cases. Clinical information is required in addition to results of thyroxine Thyroxine assay , tri-iodothyronine Tri-iodothyronine (T3) assay and thyrotropin Thyroid stimulating hormone assay assays. Further ReadingPublicationsRefereed papers Recent references from VetMed Resource and PubMed.