尿液pH值测试

定义

A urine pH test measures the level of acid in urine.

选择的名字

pH值-尿液

How the Test is Performed

After you provide a urine sample, it is tested right away. The health care provider uses a dipstick made with a color-sensitive pad. The color on the dipstick tells the provider the level of acid in your urine.

How to Prepare for the Test

Your provider may tell you to stop taking certain medicines that can affect the results of the test. These may include:

• 乙酰唑胺
• Ammonium chloride
• Methenamine mandelate
• 柠檬酸钾
• Sodium bicarbonate
• 噻嗪类利尿剂

DO NOT stop taking any medicine before talking to your provider.

Eat a normal, balanced diet for several days before the test. 注意:

• A diet high in fruits, vegetables, or non-cheese dairy products can increase your urine pH.
• A diet high in fish, meat products, or cheese can decrease your urine pH.

How the Test will Feel

The test involves only normal urination. There is no discomfort.

Why the Test is Performed

Your provider may order this test to check for changes in your urine acid levels. It may be done to see if you:

• 有…的危险 肾结石. Different types of stones can form depending on how acidic your urine is.
• Have a metabolic condition, such as renal tubular acidosis.
• Need to take certain medicines to treat urinary tract infections. Some medicines are more effective when urine is acidic or non-acidic (alkaline).

正常的结果

The normal values range from pH 4.6 to 8.0.

The examples above are common measurements for results of these tests. 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 high urine pH may be due to:

• Kidneys that do not properly remove acids (renal tubular acidosis)
• 肾功能衰竭
• Stomach pumping (gastric suction to remove fluid from the stomach)
• Urinary tract infection
• 呕吐

A low urine pH may be due to:

• Diabetic ketoacidosis
• 腹泻
• Too much acid in the body fluids (metabolic acidosis)，例如 diabetic ketoacidosis
• 饥饿

风险

There are no risks with this test.

参考文献

Bushinsky哒. 肾结石. 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 32.

Fogazzi GB, Garigali G. 验尿. In: Feehally J, Floege J, Tonelli M, Johnson RJ, eds. Comprehensive Clinical Nephrology. 6日艾德. Philadelphia, PA: Elsevier; 2019:chap 4.

Hamm LL, DuBose TD. Disorders of acid-bace balance. In: Yu ASL, Chertow GM, Luyckx VA, Marsden PA, Skorecki K, Taal MW, eds. Brenner and Rector's The Kidney. 11日艾德. Philadelphia, PA: Elsevier; 2020:chap 16.

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. Philadelphia, PA: Elsevier; 2022:chap 29.