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TSI - Results

Alternative Names

TSH receptor antibody; Thyroid stimulating immunoglobulin

Normal Values:

Normal values are less than 130% of basal activity.

Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

The example above shows the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.

What abnormal results mean:

Greater than normal levels may indicate:

  • Graves disease
  • Hashitoxicosis
  • Neonatal thyrotoxicosis
  • Reviewed last on: 4/19/2010
  • Ari S. Eckman, MD, Division of Endocrinology and Metabolism, Johns Hopkins School of Medicine, Baltimore, MD. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

AACE Thyroid Task Force. American Association of Clinical Endocrinologists medical guidelines for clinical practice for the evaluation and treatment of hyperthyroidism and hypothyroidism. Endocr Pract. 2002;8(6):457-469.

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