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    Salmonella Culture (Stool)

    Does this test have other names?

    Stool culture

    What is this test?

    This test looks for salmonella bacteria in your stool. Having these bacteria in your stool means you have a salmonella infection.

    Salmonella infection takes many forms. The most common in the U.S. is gastroenteritis, also called a "stomach bug." You can get it if you eat food contaminated by animal feces. Food is often contaminated during processing, such as when raw meat comes in contact with other foods. Undercooking meat, especially chicken, can also cause salmonella. Chicken eggs are a common carrier of salmonella.

    Typhoid fever is another type of salmonella that may affect people who travel outside the U.S. Salmonella can also cause an invasive disease such as a bone infection (osteomyelitis).

    Why do I need this test?

    You may need this test if your healthcare provider believes that you have a salmonella infection. Symptoms of salmonella may include:

    • Nausea

    • Headaches

    • Vomiting

    • Low-grade fever, chills

    • Belly pain, cramping

    • Diarrhea

    • Severe tiredness (fatigue)

    If you have a salmonella infection, your diarrhea typically will have a strong odor. Sometimes you may also have blood in the stool.

    The illness often lasts for just a few days. Children younger than 3 months may have the infection for a longer period of time. The fever can last a few days, and diarrhea may last for about a week. Most cases of the disease go away without extensive treatment.

    If you have been diagnosed with salmonella and work with children or people with a weakened immune system, or in the food industry, your employer may need multiple negative tests to prove that you no longer have salmonella.

    What other tests might I have along with this test?

    You may also need related stool cultures. These might be an ova and parasites exam (O&P) or a test for Clostridium difficile toxin.

    You may also have a blood test if your provider thinks it's possible that you have an advanced form of salmonella (bacteremia). This infection of the blood affects about 1 out of 20 of people who get salmonella.

    What do my test results mean?

    Test results may vary depending on your age, gender, health history, and other things. Your test results may be different depending on the lab used. They may not mean you have a problem. Ask your healthcare provider what your test results mean for you.

    Normal test results are negative, meaning you don't have a salmonella infection. A positive result means you have a salmonella infection.

    How is this test done?

    This test requires a stool sample. Your healthcare provider will tell you how to collect the sample and place it in a disposable specimen container with a lid. Don't collect fecal material from the toilet bowl, or urinate or put toilet paper into the specimen container.

    Does this test pose any risks?

    This test poses no known risks.

    What might affect my test results?

    Other factors aren't likely to affect your test results.

    How do I get ready for this test?

    You don't need to get ready for this test. Be sure your healthcare provider knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illegal drugs you may use.

    Online Medical Reviewer: Chad Haldeman-Englert MD
    Online Medical Reviewer: Raymond Turley Jr PA-C
    Online Medical Reviewer: Tara Novick BSN MSN
    Date Last Reviewed: 9/1/2022
    © 2000-2024 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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    Southern New Mexico
    Surgery Center

    2301 Indian Wells Rd. Suite B
    Alamogordo, NM 88310
    www.snmsc.org

    Phone: 575.437.0890
    Fax: 575.437.0905
    Email: info@snmsc.org

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