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Salmonella typhi organism
Salmonella typhi organism


Yersinia enterocolitica organism
Yersinia enterocolitica organism


Campylobacter jejuni organism
Campylobacter jejuni organism


Clostridium difficile organism
Clostridium difficile organism


Definition:

A fecal culture is a laboratory test to find organisms in the stool (feces) that can cause gastrointestinal symptoms and disease.



Alternative Names:

Stool culture; Culture - stool



How the test is performed:

A stool sample is needed.

There are many ways to collect the sample. One way is to catch the stool on plastic wrap that is loosely placed over the toilet bowl and held in place by the toilet seat. Then, put the sample in a clean container. One test kit supplies a special toilet tissue that you use to collect the sample. You then put the sample in a clean container.

For infants and young children in diapers, line the diaper with plastic wrap. Try to place the plastic wrap in a way that separates the stool from urine so you can get a better sample.

In the laboratory, a technician places a sample of the specimen in a special dish filled with a gel that encourages any microorganisms present to grow. The culture is watched for growth. If there is growth, the organisms are identified. The lab technician may also do more tests to determine the best treatment.



How to prepare for the test:

You will get a collection container for the stool specimen. Return the sample to the laboratory as soon as possible. Do not include toilet paper or urine in the specimen.



How the test will feel:

There is no discomfort.



Why the test is performed:

The test is performed when you have gastrointestinal distress and your doctor suspects that an infection is the cause. It may be performed if you have severe, persistent (won't go away), or recurrent (keeps coming back) diarrhea without a known cause.

It may also be done if you have diarrhea and have recently taken antibiotics, to see if bacteria such as C. difficile (which can cause diarrhea after people take antibiotics) are now in the intestine.



Normal Values:

Normal fecal organisms are present.

Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.



What abnormal results mean:

Abnormal results may indicate an intestinal infection .



What the risks are:

There are no risks.



Special considerations:

Often other stool tests are done in addition to the culture, such as:



References: DuPont HL. Approach to the patient with suspected enteric infection. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 305.


Review Date: 11/2/2008
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100