醛固酮血检

定义

The aldosterone blood test measures the level of the hormone aldosterone in blood.

Aldosterone can also be measured using a 尿检.

选择的名字

Aldosterone - serum; 艾迪生疾病 - serum aldosterone; Primary hyperaldosteronism - serum aldosterone; 巴特综合征 - serum aldosterone

如何执行测试

A 需要血液样本.

如何准备考试

Your health care provider may ask you to stop taking certain medicines a few days before the test so that they don't affect the test results. Be sure to tell your provider about all the medicines you take. 这些包括:

• 降压药
• 心脏药物
• Nonsteroidal anti-inflammatory drugs (NSAIDs)
• 抗酸药和溃疡药
• 水丸(利尿剂)

Do not stop taking any medicine before talking to your doctor. Your provider may recommend that you eat no more than 3 grams of salt (sodium) per day for at least 2 weeks before the test.

Or, your provider will recommend that you eat your usual amount of salt and also test the amount of 尿液中的钠.

在其他时候, the aldosterone blood test is done right before and after you receive a salt solution (saline) through the vein (IV) for 2 hours. Be aware that other factors can affect aldosterone measurements, including:

• 怀孕
• 高钠或低钠饮食
• 高钾或低钾饮食
• 剧烈运动
• 压力

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 sensation. Afterward, there may be some throbbing or a slight bruise. 这很快就会消失.

为什么要进行测试

This test is ordered for the following conditions:

• 某些液体和 电解液 disorders, most often low or high blood sodium or low potassium
• 很难控制血压
• 低血压 upon standing (orthostatic hypotension)
• Discovery of an adrenal nodule on an abdominal CT scan or MRI done for a different reason (incidentaloma)

Aldosterone is a hormone released by the 肾上腺. It helps the body regulate blood pressure. Aldosterone increases the reabsorption of sodium and water and the release of potassium in the kidneys. This action raises blood pressure.

醛固酮血检 is often combined with other tests, such as the 肾素激素试验, to diagnose over- or under-production of aldosterone. The serum potassium and sodium are also often tested along with kidney function

正常的结果

正常水平不同:

• Between children, teens, and adults
• Depending on whether you were standing, sitting, or lying down when the blood was drawn

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.

异常结果意味着什么

A higher than normal level of aldosterone may be due to:

• 巴特综合征 (group of rare conditions that affect the kidneys)
• Adrenal glands release too much aldosterone hormone (主要高醛甾酮症 - usually due to a benign nodule in the adrenal gland)
• 低钠饮食
• Taking blood pressure medicines called mineralocorticoid antagonists

A lower than normal level of aldosterone may be due to:

• 肾上腺紊乱, including not releasing enough aldosterone, and a condition called primary adrenal insufficiency (艾迪生疾病)
• 高钠饮食

风险

There is little risk involved with having your blood taken. Veins and arteries vary in size from one patient to another and from one side of the body to the other. Taking blood 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
• 昏厥或感到头晕
• Multiple punctures to locate veins
• Hematoma (blood accumulating under the skin)
• Infection (a slight risk any time the skin is broken)

参考文献

Carey RM, Padia SH. Primary mineralocorticoid excess disorders and hypertension. 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 108.

Guber HA, Oprea M, Russell YX . 内分泌功能评价. 见:McPherson RA, Pincus MR，编辑. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24日艾德. Philadelphia, PA: Elsevier; 2022:chap 25.