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By Mayo Clinic staffIf your urine is being tested only for urinalysis, you can eat and drink normally before the test. If you are having other tests at the same time, you may need to fast for a certain amount of time before the test. Your doctor will give you specific instructions.
Many drugs, including nonprescription medications and vitamins, can affect the results of a urinalysis. Before a urinalysis, tell your doctor about any medications or vitamins you're taking.
References
- What you need to know about urinalysis. National Kidney Foundation. www.kidney.org. Accessed Dec. 5, 2010.
- Wu X. Urinalysis: A review of methods and procedures. Critical Care Nursing Clinics of North America. 2010;22(1):121.
- Echeverry G, et al. Introduction to urinalysis: Historical perspectives and clinical application. Methods in Molecular Biology. 2010;641:1.
- Ferri FF. Laboratory Tests and Interpretation of Results. In: Ferri FF. Ferri's Clinical Advisor 2011: Instant Diagnosis and Treatment. Philadelphia, Pa.: Mosby Elsevier; 2011. http://www.mdconsult.com/books/about.do?eid=4-u1.0-B978-0-323-05610-6..C2009-0-38600-6--TOP&isbn=978-0-323-05610-6&about=true&uniqId=230100505-53. Accessed Dec. 10, 2010.
- Meng MV, et al. Urologic Disorders. In: McPhee SJ, et al. Current Medical Diagnosis & Treatment 2011. 50th ed. New York, N.Y.: The McGraw-Hill Companies; 2011. http://www.accessmedicine.com/resourceTOC.aspx?resourceID=1. Accessed Dec. 10, 2010.
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