Access TSH (3rd IS) Assay

Thyroid assessment for today and the future

Measuring thyroid stimulating hormone (TSH) is useful in assessing thyroid function and monitoring patients undergoing thyroid replacement therapy. The Access TSH (3rd IS) assay can help you provide physicians and their patients with reliable, accurate results for each test, every time.

TSH is part of the hypothalamic-pituitary-thyroid axis that regulates the body’s metabolism. The hypothalamus secretes a thyrotropin-releasing hormone (TRH), stimulating the pituitary gland to secrete TSH. TSH causes the release of thyroid hormones, T3 (triiodothyronine) and T4 (thyroxine), which control metabolic functions within the cells. When excessive amounts of T3 or T4 circulate, production of TRH stops, resulting in the process being controlled by a negative feedback loop.

This product may not be available in your country or region at this time. Please contact your Beckman Coulter sales representative or distributor for more information.

Greater confidence in patient results

The Access TSH (3rd IS) assay provides adherence to the highest industry standards.

  • Ensures standardization to the World Health Organization 3rd International Standard (IS) for human TSH (IRP  81/565)
  • Adheres to classification by generation, based on functional sensitivity
    • In the U.S., the National Academy of Clinical Biochemistry has recommended that the functional sensitivity of 3rd generation TSH assays be 0.01-0.02 μIU/mL with an interassay %CV of </= 20%
    • Nearly all TSH assays in use are 3rd generation assays

Maximized laboratory workflow

The Access TSH (3rd IS) assay ensures less hands-on time in the laboratory.

  • Includes a larger reagent pack size (100 tests per pack, 200 tests per kit) to accommodate laboratories handling varying sample volumes
  • Offers long open-pack and calibration stability (28 days) ensuring accurate test results each and every time   

Highly reliable, accurate results with increased sensitivity

The Access TSH (3rd IS) assay provides high functional sensitivity and precision.

  • Is part of our full panel of thyroid tests to aid in the diagnosis of thyroid function
  • Features an assay range that supports measuring patient samples as low as 0.005 μIU/mL (0.01 μIU/mL in the U.S.)

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