Saturday, February, 11, 2012

Antithyroid microsomal antibody

Table of Contents

Alternative Names

Thyroid antimicrosomal antibody; Antimicrosomal antibody; Microsomal antibody; Thyroid peroxidase antibody; TPOAb


Normal Values

A negative test is normal.

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


What abnormal results mean

A positive test may be due to:

  • Autoimmune hemolytic anemia
  • Granulomatous thyroiditis
  • Hashimoto's thyroiditis
  • Nontoxic nodular goiter
  • Rheumatoid arthritis
  • Sjogren syndrome
  • Systemic lupus erythematosus
  • Thyroid cancer

Other conditions under which the test may be performed:

  • Autoimmune hepatitis

High levels of these antibodies have also been linked to an increased risk of:

  • Miscarriage
  • Preeclampsia
  • Premature birth
  • In vitro fertilization failure

Images

Review Date: 04/20/2010
Reviewed By: 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.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)