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Stool Culture with Specific Pathogen Identification (e.g., Clostridioides difficile)

Published: August 9, 2026Updated: August 16, 2026

This test checks your stool sample for the presence of harmful bacteria, including *Clostridioides difficile*, which can cause severe diarrhea and other gastrointestinal issues. It helps doctors diagnose infections that may require treatment.

Quick summary

["This test identifies certain bacteria in your stool that could indicate an infection needing medical attention."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
100897-8
Short code
S aureus Spec Ql Cult
Synonyms
S aureus Spec Ql Cult
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
organism-specific-culture
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your doctor may recommend this test if you have symptoms like severe diarrhea, abdominal pain, or fever that could be caused by a bacterial infection. It’s also used when you’ve recently taken antibiotics, as these can disrupt normal gut bacteria and increase the risk of *C. difficile* infections. Additionally, it may be done if you’re in a healthcare setting with a high risk of infection spread.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to avoid certain foods or medications for a short time. Your doctor will provide specific instructions if applicable. Bring any recent medications or supplements you’re taking, as they might affect results.

What Happens During the Test

You’ll provide a small sample of your stool in a sterile container. The sample is then sent to a lab where it’s cultured to grow any bacteria present. Special tests may follow to identify specific pathogens, including *C. difficile*. Results can take several days to a week, depending on the lab’s process.

What the Results Mean

If bacteria are found, your doctor will discuss treatment options, which may include antibiotics tailored to the identified infection. If no bacteria are detected, it doesn’t necessarily mean you’re free of infection—other causes of symptoms could still exist. Follow-up tests or additional questions may be needed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Stool C. diff Test

Frequently asked questions

Is this test covered by insurance?
Most insurance plans cover stool culture tests when ordered by a healthcare provider for diagnosing infections. However, check with your insurance company for specifics, as coverage may vary. Your doctor’s office can also help clarify coverage details.
How long will I need to wait for results?
Results typically take between 3 to 7 business days, depending on lab processing times. Your doctor will contact you once results are available, or you may receive a call from the lab directly. In some cases, results may be available sooner if urgent testing is performed.
Can I eat or drink normally before the test?
Yes, you can eat and drink as usual before the test unless your doctor specifies otherwise. Avoiding certain foods or medications is usually only recommended if instructed by your healthcare provider or lab staff.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy