Antithyroglobulin antibody test

定义

Antithyroglobulin antibody is a test to measure 抗体 to a protein called thyroglobulin. This protein is found in thyroid cells, but a small amount leaks out into the bloodstream. Sometimes the immune system produces 抗体 against this protein.

选择的名字

Thyroglobulin antibody; Thyroiditis - thyroglobulin antibody; Hypothyroidism - thyroglobulin antibody; Thyroiditis - thyroglobulin antibody; 格雷夫斯病 - thyroglobulin antibody; 不够甲状腺 - thyroglobulin antibody

如何执行测试

A 血液样本 是必要的.

How to Prepare for the Test

You may be told not to eat or drink anything for several hours (usually overnight). Your health care provider may monitor you or tell you to stop taking certain medicines for a short time before the test because they may affect the test results. DO NOT stop taking any medicine without first talking to your provider.

考试的感觉如何

When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. Afterward, there may be some throbbing or a slight bruise. 这很快就会消失.

Why the Test is Performed

This test helps detect possible thyroid problems.

Antithyroglobulin 抗体 can be a sign of thyroid gland damage caused by the immune system. 它们可能会被测量 甲状腺炎 被怀疑.

Measuring thyroglobulin antibody levels after treatment for thyroid cancer can help your provider decide what the best test is to monitor you for a recurrence of the cancer.

正常的结果

A negative test result is a normal result. It means no 抗体 to thyroglobulin are found in your blood.

Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your provider about the meaning of your specific test results.

What Abnormal Results Mean

A positive test means antithyroglobulin 抗体 are found in your blood. 他们可能会出席:

• 格雷夫斯病 or 甲状腺功能亢进
• 桥本甲状腺炎
• 亚急性甲状腺炎
• 不够甲状腺
• Systemic lupus erythematosus
• 1型糖尿病

Pregnant women and relatives of those with autoimmune 甲状腺炎 may also test positive for these 抗体.

If you have a positive test for antithyroglobulin 抗体, this may make it harder to measure your thyroglobulin level accurately. Thyroglobulin level is an important blood test to determine risk that thyroid cancer will recur.

风险

There is little risk involved with having your blood taken.Veins and arteries vary in size from one person to another and from one side of the body to the other. Obtaining a 血液样本 from some people may be more difficult than from others.

Other risks associated with having blood drawn are slight, but may include:

• 大出血
• Fainting or feeling lightheaded
• Multiple punctures to locate veins
• Hematoma (blood buildup under the skin)
• Infection (a slight risk any time the skin is broken)

参考文献

Guber HA, Oprea M, Russell YX. Evaluation of endocrine function. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24日艾德. Philadelphia, PA: Elsevier; 2022:chap 25.

Salvatore D, Cohen R, Kopp PA, Larsen PR. Thyroid pathophysiology and diagnostic evaluation. In: Melmed S, Auchus RJ, Goldfine AB, Koenig RJ, Rosen CJ, eds. Williams Textbook of Endocrinology. 14日艾德. Philadelphia, PA: Elsevier; 2020:chap 11.

Weiss RE, Refetoff S. 甲状腺功能检查. In: Jameson JL, De Groot LJ, de Kretser DM, et al, eds. Endocrinology: Adult and Pediatric. 7日艾德. Philadelphia, PA: Elsevier Saunders; 2016:chap 78.