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With treatment, usually around 2 or 3 days. Without antibiotics, they can last longer, but this is dangerous as you risk the infection traveling up into the kidneys and becoming much more serious--if this happens, you may need intravenous antibiotics and an overnight stay in the hospital. The best thing to do is to see your doctor as soon as you suspect a UTI. You can cut down the time by drinking lots of water and cranberry juice, or other cranberry supplements.

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16y ago
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10y ago

If there is no blood infection or kidney infection, you shouldn't find bacterias in urine after 7 days of antibiotics for a regular UTI (urinary tract infection). You still may have symptoms but urine should be sterile.

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Q: How long does a UTI last?
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