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Thyroid-stimulating Immunoglobulin Blood Test (TSI)

Total reviews 411

$208.50 $139.00

Total reviews 411


  • Tests Included: 1

  • Est. 6-8 (business days) Turnaround

  • Specimen type: Blood

  • Quest Diagnostics Location

Graves' disease is a classic form of hyperthyroid disease, affecting approximately 0.4% of the population of the United States. It is caused by IgG immunoglobulins, collectively known as thyroid stimulating immunoglobulins (TSI). Patients who are candidates for antithyroid drug therapy may not respond to this treatment when TSI levels are markedly elevated. The determination of TSI can also assist in predicting hyperthyroidism in neonates, due to placental transmission of the immunoglobulins from a mother with hyperthyroidism.

$208.50 $139.00
  • Tests Included: 1

  • Est. 6-8 (business days) Turnaround

  • Specimen type: Blood

  • Quest Diagnostics Location

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TSI (Thyroid Stimulating Immunoglobulin)

  • Test Code: 30551
  • CPT Code: 84445
  • Alternate Name: Thyroid Receptor Antibody,Thyroid Stimulating Immunoglobulin
  • Test Instructions : --

    Please do not exercise prior to testing. It is best that your blood is taken in a rested state.

  • Fasting: No
  • Methodology: In Vitro Bioassay
  • Results In: 6-8

    Note: Turn around times on results are an estimate and are not guaranteed. The lab may need additional time due to holidays, confirmation/repeat testing, etc. You can contact us to discuss when your results should be ready and we will contact the lab on your behalf immediately.

<140% Baseline

$208.50 $139.00

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