What Are the Causes of an Alkaline Reaction in Urine?

Updated February 21, 2017

Normal, healthy urine usually is slightly alkaline or acidic. Normal acidic urine results from the consumption of amino acids and proteins. Normal alkaline urine is a result of the consumption of vegetables, legumes and citrus fruit. Alkaline urine can be detected with a test of the pH in the urine. Normal pH levels range from 5.0 to 6.0. Alkaline urine has a pH range from 8.0 to 8.5.

Salicylate Intoxication

Salicylate intoxication is commonly found in people who have taken too much aspirin or over-the-counter medications which contain salicylates, whether by accident or in an effort to commit suicide.

Urinary Tract Obstruction

An obstruction can occur anywhere in the urinary tract. The obstruction impedes the flow of urine and is often painful. Pregnancy and enlargement of the prostate are both causes of urinary tract obstruction.

Gastric Outlet Obstruction

Gastric outlet obstruction can be either benign or malignant. Some of the causes of benign gastric outlet obstruction include caustic ingestion, gallstones, gastric polyps and peptic ulcer disease. The most common cause for the malignant obstruction is cancer, such as pancreatic, gastric and ampullary.

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About the Author

Lana Bradstream began her journalism career in 2000. She has worked at the "Mobridge Tribune," the "Custer County Chronicle," "Rapid City Weekly News" and the "Box Elder Horizon," with regular beats of government, crime, agriculture, entertainment and feature stories. Bradstream studied journalism at the University of South Dakota.