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</div><div><span>Asymptomatic bacteriuria</span></div></div>
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<article><div id="d-article"><div class="page-info"><div class="page-title"><a name="start" id="start">
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</a><h1 class="with-also" itemprop="name">Asymptomatic bacteriuria</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>Most of the time, your urine is sterile. This means there are no bacteria growing. On the other hand, if you have symptoms of a <a test="test" href="./000521.htm">bladder or kidney infection</a>, bacteria will often be present and growing in your urine.</p><p>Sometimes, your health care provider may check your urine for bacteria, even when you do not have any symptoms. If enough bacteria are found in your urine, you have asymptomatic bacteriuria.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>Causes</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>Asymptomatic bacteriuria occurs in a small number of healthy people. It affects women more often than men. The reasons for the lack of symptoms are not well understood.</p><p>You are more likely to have this problem if you:</p><ul><li>Have a <a test="test" href="./003981.htm">urinary catheter</a> in place</li><li>Are female</li><li>Are pregnant</li><li>Are sexually active (in females)</li><li>Have long-term diabetes and are female</li><li>Are an older adult</li><li>Have recently had a surgical procedure on your urinary tract</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Symptoms</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>There are no symptoms of this problem.</p><p>If you have these symptoms, you may have a urinary tract infection, but you do not have asymptomatic bacteriuria.</p><ul><li>Burning during urination</li><li>Increased <a test="test" href="./003140.htm">urgency to urinate</a></li><li>Increased frequency of urination</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Exams and Tests</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>To diagnose asymptomatic bacteriuria, a urine sample must be sent for a <a test="test" href="./003751.htm">urine culture</a>. Most people with no urinary tract symptoms do not need this test.</p><p>You may need a urine culture done as a screening test, even without symptoms, if:</p><ul><li>You are pregnant</li><li>You have a surgery or procedure planned that involves the bladder, prostate, or other parts of the urinary tract</li></ul><p>To make the diagnosis of asymptomatic bacteriuria, the culture must show a large growth of bacteria.</p><ul><li>In men, only one culture needs to show growth of bacteria</li><li>In women, two different cultures must show growth of bacteria</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Treatment</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>Most people who have bacteria growing in their urine, but no symptoms, do not need treatment. This is because the bacteria are not causing any harm. In fact, treating people with this problem may make it harder to treat infections in the future.</p><p>However, for some people getting a urinary tract infection is more likely or may cause more severe problems. As a result, treatment with antibiotics may be needed if:</p><ul><li>You are pregnant.</li><li>You recently had a kidney transplant.</li><li>You are scheduled for surgery involving the prostate gland or the bladder.</li><li>You have kidney stones that have caused an infection.</li><li>Your young child has <a test="test" href="./000459.htm">reflux</a> (backward movement of urine from the bladder into ureters or kidneys).</li></ul><p>Without symptoms being present, even people who are older adults, have diabetes, or have a catheter in place do not need treatment.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Possible Complications</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>If it is not treated, you may have a kidney infection if you are at high risk.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>When to Contact a Medical Professional</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Contact your provider if you have:</p><ul><li>Difficulty emptying your bladder</li><li>Fever</li><li>Flank or back pain</li><li>Pain with urination</li></ul><p>You will need to be checked for a bladder or kidney infection.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Screening - asymptomatic bacteria</p></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Images</h2></div><div class="section-button"><button type="submit" aria-controls="section-tnails" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/10022t.jpg" alt="Male urinary system" title="Male urinary system" class="side-img"/><a href="../imagepages/10022.htm">Male urinary system</a></li>
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/19502t.jpg" alt="Vesicoureteral reflux" title="Vesicoureteral reflux" class="side-img"/><a href="../imagepages/19502.htm">Vesicoureteral reflux</a></li>
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</ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Cooper KL, Badalato GM, Rutman MP. Infections of the urinary tract. In: Partin AW, Dmochowski RR, Kavoussi LR, Peters CA, eds. <em>Campbell-Walsh-Wein Urology</em>. 12th ed. Philadelphia, PA: Elsevier; 2021:chap 55.</p><p>Drekonia D. Approach to the patient with urinary tract infection. In: Goldman L, Cooney KA, eds. <em>Goldman-Cecil Medicine</em>. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 263.</p><p>Smaill FM, Vazquez JC. Antibiotics for asymptomatic bacteriuria in pregnancy. <em>Cochrane Database Syst Rev</em>. 2019;11:CD000490. PMID: 31765489 <a href="https://pubmed.ncbi.nlm.nih.gov/31765489/" target="_blank">pubmed.ncbi.nlm.nih.gov/31765489/</a>.</p><p>Zalmanovici Trestioreanu A, Lador A, Sauerbrun-Cutler M-T, Leibovici L. Antibiotics for asymptomatic bacteriuria. <em>Cochrane Database Syst Rev</em>. 2015;4:CD009534. PMID: 25851268 <a href="https://pubmed.ncbi.nlm.nih.gov/25851268/" target="_blank">pubmed.ncbi.nlm.nih.gov/25851268/</a>.</p></div></div></section>
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<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 7/23/2024</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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