Testosterone

Definition

A testosterone test measures the amount of the male hormone, testosterone, in the blood. 男性和女性都会产生这种激素.

The test described in this article measures the total amount of testosterone in the blood. Much of the testosterone in the blood is bound to a protein called sex hormone binding globulin (SHBG). 另一项血液测试可以测量“游离”睾丸激素. 然而，这种类型的测试通常不是很准确.

随着男性年龄的增长，他们的睾丸激素水平可能会下降.正确的答案是事实. 随着男性年龄的增长，睾丸激素水平可能会下降. 这种下降是正常的，许多男人甚至没有注意到. 但如果含量过低，可能会出现一些症状. See your doctor if you notice changes in your mood or sex drive. Which physical change could be a sign of 低睾酮?正确答案是乳房肿胀. Men with 低睾酮 also may lose body hair and muscle mass. 他们的睾丸可能会萎缩. See your doctor if you notice any of these changes in your body. It is normal for older men to lose all interest in sex.正确答案是神话. It is normal for older men to have less interest in sex compared to when they were younger. 但失去对性的全部兴趣是不正常的. 这可能是睾丸激素水平低的迹象. 如果你对性失去兴趣，告诉你的十大赌博平台排行榜. 治疗可能有所帮助.低睾丸激素会导致勃起困难.正确的答案是事实. Low testosterone can make it difficult to get or keep an erection. 它还会导致精子数量减少. Erection problems are also called 勃起功能障碍, or ED. Health problems, such as high blood pressure, and many medications can also cause ED. 去看十大赌博平台排行榜，找出可能导致ED的原因.Which emotional change could be a sign of 低睾酮?正确答案是以上全部. Some men also have hot flashes as testosterone levels drop. Emotional changes can make it hard to work, sleep, or do things you enjoy. Be sure you talk with your doctor if these symptoms occur.一个简单的血液测试就能检测出睾丸激素水平低.正确的答案是事实. 如果你有ED, 对性失去兴趣, 或者有其他症状，比如乳房肿胀, 你的十大赌博平台排行榜可能会检查睾丸激素是否过低. To do the test, your doctor will draw a sample of blood. Sometimes, more than one blood test is needed to accurately diagnose 低睾酮.衰老是睾酮水平低的唯一原因.正确答案是假的. 一些药物, 某些癌症, 基因问题, injury to the testicles and other health problems can cause 低睾酮. Your doctor can do tests to find out what is causing 低睾酮.低睾丸激素会使男性骨骼变弱.正确的答案是事实. 低睾丸激素会导致骨质疏松, a condition that causes thinner bones that may break more easily. 如果你的睾丸激素水平低, your doctor may recommend a bone density test to see if you have osteoporosis.睾酮治疗可以帮助:正确答案是以上全部. Testosterone therapy means taking testosterone to bring levels closer to normal. 这可以减少低睾丸激素引起的变化, 但并不是每个人都对睾酮疗法有反应.睾丸激素疗法对所有老年男性都是一个好主意.正确答案是神话. Some men don't need treatment for 低睾酮 because they don't have symptoms. Testosterone therapy isn't a good idea for healthy older men who don't have 低睾酮. 它可能会增加患前列腺癌的风险. Your doctor can help you decide if testosterone therapy is right for you.

选择的名字

血清睾酮

如何执行测试

A blood sample 是从静脉取出的吗. The best time for the blood sample to be taken is between 7 a.m. and 10 a.m. A second sample is often needed to confirm a result that is lower than expected.

如何准备考试

The health care provider may advise you to stop taking medicines that may affect the test.

考试的感觉如何

You may feel a slight prick or sting when the needle is inserted. 之后可能会有一些悸动.

为什么要进行测试

This test may be done if you have symptoms of abnormal male hormone (androgen) production.

In males, the testicles produce most of the testosterone in the body. Levels are most often checked to evaluate signs of abnormal testosterone such as:

青春期早期或晚期(男孩)
Infertility, 勃起功能障碍低水平的性兴趣骨骼变薄 (in men)

In females, the ovaries produce most of the testosterone. The adrenal glands can also produce too much of other androgens that are converted to testosterone. Levels are most often checked to evaluate signs of higher testosterone levels, such as:

粉刺、油性皮肤
声音的变化
乳房变小
毛发生长过多(深色), 胡须部位的粗毛, beard, sideburns, chest, buttocks, 大腿内侧)
阴蒂增大
月经不规律或没有月经期
男性型秃顶或头发稀疏

正常的结果

这些测试的正常测量值:

Male: 300 to 1,000 nanograms per deciliter (ng/dL) or 10 to 35 nanomoles per liter (nmol/L)
女性:15至70毫微克/分升或0.5 to 2.4 nmol/L

The examples above are common measurements for results for these tests. Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different specimens. Talk to your provider about the meaning of your specific test results.

异常结果意味着什么

Certain health conditions, medicines, or injury can lead to 低睾酮. 睾丸激素水平也会随着年龄的增长而自然下降. Low testosterone can affect sex drive, mood, and muscle mass in men.

总睾酮降低可能是由于:

慢性疾病
脑下垂体不产生正常数量的部分或全部激素
Problem with areas of the brain that control hormones (hypothalamus)
甲状腺功能低下
青春期延迟
Diseases of the testicles (trauma, cancer, infection, immune, iron overload)
Benign tumor of the pituitary cells that produce too much of the hormone prolactin
体脂过多(肥胖)
睡眠问题(阻塞性睡眠呼吸暂停)
Chronic stress from too much exercise (overtraining syndrome)

总睾酮水平升高可能是由于:

Resistance to the action of male hormones (androgen resistance)
卵巢肿瘤
睾丸癌
先天性肾上腺增生
Taking medicines or drugs that increase testosterone level (including some supplements)

References

雷伊·拉，乔索·N. Diagnosis and treatment of disorders of sexual development. 见:Jameson JL, De Groot LJ, De Kretser DM等编. 内分泌学:成人和儿童. 7th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 119.

Rosenfield RL, Barnes RB, Ehrmann DA. Hyperandrogenism, hirsutism, and polycystic ovary syndrome. 见:Jameson JL, De Groot LJ, De Kretser DM等编. 内分泌学:成人和儿童. 7th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 133.

王超. The testis and male hypogonadism, infertility, and sexual dysfunction. 参见:Goldman L, Schafer AI主编. Goldman-Cecil医学. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 221.

Review Date: 02/01/2022

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