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The symptoms are common and easy to explain away – but a simple blood test can provide an effective and possibly life-savings diagnosis.

  • Low or suppressed Thyroid Stimulating Hormone (TSH), along with symptoms, is an early indicator of Hyperthyroidism.
  • At least 70% of Hyperthyroid patients suffer from an autoimmune disorder called Graves’ disease.
  • Thyroid Stimulating Immunoglobulins (TSIs) are antibodies that cause Graves’ disease.

Thyretain® TSI Reporter BioAssay is for the specific detection of thyroid-stimulating immunoglobulin (TSI) in the bloodstream, the antibodies directly linked to Graves’ disease.

It could be more than just stress and fatigue.

Find out if it could be Graves’ Disease.


A timely, accurate diagnosis is crucial.

  • Symptoms alone aren’t enough for diagnosis. To really know for sure, you have to measure for TSI antibodies.
  • Thyretain BioAssay is the only FDA-cleared bioassay that specifically detects the TSI antibodies directly linked with Graves’ disease.
  • With a simple blood sample, a positive TSI result can lead to diagnostic confidence in pursuing the desired treatment plan with the patient
  • This assay is commercially available in large reference laboratories and regional centers of excellence.
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