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Bicarbonate Urine Test

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The bicarbonate urine test measures the amount of bicarbonate, a form of carbon dioxide, in the urine.


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Test Code:


CPT Code(s):



Enzymatic Assay (EZA)




No special preparation required.

Test Results:

8-10 days. May take longer based on weather, holiday or lab delays.

Walk-In Lab is prohibited from selling Quest tests to residents in the following states:AZ, NY, NJ, RI

Order a bicarbonate urine test to measure the amount of bicarbonate, a form of carbon dioxide, in the urine. Bicarbonate is an electrolyte that the body uses to keep its acid-base (pH) balance in balance. Healthy kidneys perform many functions. One of these responsibilities is to maintain the proper acid balance in the body. This is accomplished by the kidneys eliminating acid from the body through urine. A build-up of too many acids in the blood causes metabolic acidosis. 

Metabolic acidosis is the accumulation of acid in the body as a result of renal disease or kidney failure. When body fluids include an excessive amount of acid, the body is either not removing enough acid, producing too much acid, or is unable to balance the acid in the body.

Signs and symptoms may not be experienced by all individuals but can include:

  • Fast heartbeat
  • Long and deep breaths
  • Weakness
  • Headache and/or confusion
  • Feeling very tired
  • Loss of appetite
  • Vomiting
  • Nausea

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