氨基酸尿

定义

氨基酸尿 is an abnormally high amount of amino acids in the urine. Amino acids are the building blocks for proteins in the body.

选择的名字

Amino acids - urine; Urine amino acids

How the Test is Performed

A clean-catch urine sample 可能需要. This is often done at your health care provider's office or health clinic.

How to Prepare for the Test

Most of the time, you do not need to take special steps before this test. Make sure your provider knows all of the medicines you recently used. If this test is being done on an infant who is breastfeeding, make sure the provider knows what medicines the nursing mother is taking.

How the Test will Feel

The test involves only normal urination.

Why the Test is Performed

This test is done to measure amino acid levels in the urine. There are many different types of amino acids. It is common for some of each kind to be found in the urine. Increased levels of individual amino acids can be a sign of a problem with metabolism.

正常的结果

The specific value is measured in mmol/mol creatinine. The values below represent normal ranges in 24 hours urine for adults.

丙氨酸:9比98

精氨酸:0 ~ 8

Asparagine: 10 to 65

天冬氨酸: 5 to 50

Citrulline: 1 to 22

胱氨酸:2比12

Glutamic acid: 0 to 21

Glutamine: 11 to 42

Glycine: 17 to 146

Histidine: 49 to 413

Isoleucine: 30 to 186

亮氨酸:1到9

赖氨酸:2到16

Methionine: 2 to 53

鸟鸟:1比5

苯丙氨酸: 1 to 5

脯氨酸:3 ~ 13

丝氨酸:0 ~ 9

Taurine: 18 to 89

Threonine: 13 to 587

酪氨酸:3到14

瓦林:3到36

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

The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.

What Abnormal Results Mean

Increased total urine amino acids may be due to:

• 尿黑酸尿
• Canavan疾病
• 胱氨酸病
• Cystathioninuria
• Fructose intolerance
• 半乳糖血症
• Hartnup疾病
• 高胱氨酸尿
• Hyperammonemia
• Hyperparathyroidism
• Maple syrup urine disease
• Methylmalonic acidemia
• 多发性骨髓瘤
• Ornithine transcarbamylase deficiency
• 骨软化
• Propionic acidemia
• 佝偻病
• Tyrosinemia type 1
• Tyrosinemia type 2
• 病毒 肝炎
• 威尔逊的疾病

注意事项

Screening infants for increased levels of amino acids can help detect problems with metabolism. Early treatment for these conditions may prevent complications in the future.

参考文献

Dietzen DJ, Willrich MAV. Amino acids, peptides, and proteins. In: Rifai N, Chiu RWK, Young I, Burnham Carey-Ann D, Wittwer CT, eds. Tietz Textbook of Laboratory Medicine. 7日艾德. St Louis, MO: Elsevier; 2023:chap 31.

克利格曼RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM. Defects in metabolism of amino acids. In: 克利格曼RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21艾德. Philadelphia, PA: Elsevier; 2020:chap 103.

Riley RS, McPherson RA. Basic examination of urine. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24日艾德. Elsevier; 2022:chap 29.