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TSI Stimulating Reporter BioAssay

The Thyretain TSI Stimulating Reporter BioAssay is intended for the qualitative detection in serum of thyroid stimulating autoantibodies to the thyroid stimulating hormone (TSH) receptors (TSHRs) on the thyroid. The detection of these stimulating autoantibodies, in conjunction with other clinical and laboratory findings, may be useful as an aid in the differential diagnosis of patients with Graves’ disease. 

Thyretain specifically detects TSI in a user-friendly format.

  • Specific, sensitive and reproducible test results.
  • Simplified cell culture techniques utilizing DHI frozen cell culture technology.
  • Use of whole serum eliminates the need for IgG purification, saving time and money.

To learn more about Graves' Disease and the Thyretain TSI Stimulating Reporter BioAssay, visit thyretain.com.

Knowing if it's TSI or TBI matters. Visit checkonemorebox.com to learn how to get the complete picture.

Features & Benefits


Product Specifications

Product Spec NameProduct Spec Data

Store at –70°C or lower

Control Set (Positive, Reference and Normal)

Store at –70°C or lower

Cell Attachment Solution*

Store at 2°C to 30°C

Growth Medium

Store at 2°C to 8°C

Reaction Buffer

Store at 2°C to 8°C

Luciferase Assay Reagent Set

Store at –20°C or lower

*The solution may show precipitation if stored at refrigerated temperatures. The material may be dissolved when the solution is warmed in a 35°C to 37°C water bath. It is recommended that this solution be stored at room temperature to avoid precipitation. 

Ordering Information

Catalog NumberDescriptionKit Size / Case Size


Thyretain TSI Stimulating Reporter BioAssay (Capable of testing 50 plates)


Thyretain FreshFrozenCells and Control Set


Thyretain Media Set


Luciferase Assay Reagent Sets