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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.
- Urinalysis. Lab Tests Online. http://labtestsonline.org/understanding/analytes/urinalysis/test.html. Accessed Dec. 17, 2008.
- What you need to know about urinalysis. National Kidney Foundation. http://www.kidney.org/atoz/pdf/urinalysis.pdf. Accessed Dec. 12, 2008.
- Stoller ML, et al. Urologic Disorders. In: McPhee SJ, et al. Current Medical Diagnosis & Treatment 2009. New York, N.Y.: McGraw-Hill Companies; 2008. http://www.accessmedicine.com/content.aspx?aID=11917&searchStr=urinalysis. Accessed Dec. 17, 2008.
- Kim HL, et al. Urology. In: Brunicardi FC, et al. Schwartz's Principles of Surgery. 8th ed. New York, N.Y.: McGraw-Hill Companies; 2008. http://www.accessmedicine.com/content.aspx?aID=819033&searchStr=urinalysis. Accessed Dec. 17, 2008.
- Urine tests. KidsHealth. http://kidshealth.org/parent/general/sick/labtest7.html. Accessed Dec. 17, 2008.
- Laboratory diagnosis: Urine studies. In: Gomella LG, et al. Clinician's Pocket Reference. 11th ed. New York, N.Y.: McGraw-Hill Companies; 2008. http://www.accessmedicine.com/content.aspx?aID=11917&searchStr=urinalysis. Accessed Dec. 17, 2008.
- hCG. Lab Tests Online. http://labtestsonline.org/understanding/analytes/hcg/multiprint.html. Accessed Dec. 23, 2008.
- Testing for drugs of abuse. Lab Tests Online. http://labtestsonline.org/understanding/analytes/drug_abuse/glance.html. Accessed Dec. 23, 2008.
