Test ID: UPHB
pH, Body Fluid
Useful For 
Suggests clinical disorders or settings where the test may be helpful
Gastric fluid pH can help determine if acid production in the stomach is normal.
Clinical Information Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test
The pH value is a measure of hydrogen ion concentration. A variety of disease processes can alter pH values. Determining the pH value of a body fluid may help characterize the nature of the fluid.
Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
Varies with fluid type and location.
Interpretation Provides information to assist in interpretation of the test results
Normal gastric fluid has a pH <3.5; any higher pH is abnormal.
Clinical Reference Provides recommendations for further in-depth reading of a clinical nature
Kaplan LA, Pesce AJ: Clinical Chemistry, 3rd edition, Mosby-Year Book Inc, 1996, p. 823
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