How you prepareBy Mayo Clinic staff
If 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.
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