TSI测试

定义

TSI stands for thyroid stimulating immunoglobulin. tsi是 抗体 that tell the thyroid gland to become more active and release excess amounts of thyroid hormone into the blood. A TSI测试 measures the amount of thyroid stimulating immunoglobulin in your blood.

选择的名字

TSH receptor stimulating antibody; Thyroid stimulating immunoglobulin; Hypothyroidism - TSI; Hyperthyroidism - TSI; Goiter - TSI; Thyroiditis - TSI

How the Test is Performed

A 血液样本 是必要的.

How to Prepare for the Test

No special preparation is usually necessary.

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

Your health care provider may recommend this test if you have signs or symptoms of an overactive thyroid (hyperthyroidism), 包括以下症状:

• 格雷夫斯病
• Toxic multinodular goiter
• Thyroiditis (swelling and inflammation of the thyroid gland caused by an overactive immune system)

The test is also done during the last 3 months of pregnancy to predict 格雷夫斯病 in the baby.

The TSI测试 is most commonly done if you have signs or symptoms of hyperthyroidism but are unable to have a test called thyroid uptake and scan.

This test is not commonly done because it is expensive. Most of the time, another test called TSH receptor antibody test is ordered instead.

正常的结果

Normal values are less than 130% of basal activity.

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

What Abnormal Results Mean

A higher-than-normal level may indicate:

• 格雷夫斯病 (most common)
• Hashitoxicosis (very rare)
• Neonatal thyrotoxicosis

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。

Chuang J, Gutmark-Little I. Thyroid disorders in the neonate. In: Martin RJ, Fanaroff AA, Walsh MC, eds. Fanaroff and Martin's Neonatal-Perinatal Medicine. 11日艾德. Philadelphia, PA: Elsevier; 2020:chap 88.

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.

Guber HA, Oprea M, Rusell 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.

Weiss RE, Refetoff S. Thyroid function testing. 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.