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Shigella Culture (Stool)

Published: August 9, 2026Updated: August 17, 2026

This test checks for the presence of *Shigella* bacteria in a stool sample, which can cause severe diarrhea, abdominal pain, and fever. It helps diagnose infections caused by this bacteria.

Quick summary

["A stool culture may be needed if you have symptoms of a bacterial infection."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
88586-3
Short code
Shigella Stl Cult
Synonyms
Shigella Stl Cult
Category
chemistry
Sample
stool
Container
Clean container
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
organism-specific-culture
CPT
84484
SNOMED
302774002
Specimen volume
5 g
Stability
Refrigerated: 24h, Frozen: 7d
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms like persistent diarrhea, bloody stools, fever, or dehydration. It’s especially important if you’ve traveled to areas with higher risk for Shigella infections or if you’ve been in close contact with someone who has a Shigella infection.

What to Expect Before the Test

No special preparation is needed. Bring any stool sample collected at home (if instructed) or provide a fresh sample during a visit to your doctor’s office. Wear comfortable clothing and bring any medications you’re currently taking.

What Happens During the Test?

A healthcare provider will collect a stool sample using a sterile swab. The sample is then sent to a lab for culture. Results may take several days to a week, as the bacteria need time to grow in the lab.

What Are Possible Results?

A positive result means *Shigella* bacteria were found in your stool. A negative result means no *Shigella* was detected. Follow-up testing or treatment may be recommended based on the results.

Reference range

Adult: 10-40 U/LN/A

Specimen: stool

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Stool Culture for Shigella

Frequently asked questions

What Does This Test Tell You About My Health?
This test helps confirm if you have a Shigella infection, which can lead to serious dehydration or complications if untreated. Early diagnosis allows for prompt treatment with antibiotics to reduce symptoms and prevent spread.
How Long Will I Need to Wait for Results?
Results typically take 2–7 days, depending on lab processing times. Your provider will contact you once results are available. In some cases, results may be available sooner if your sample is urgent.
What If My Test Results Are Positive?
If positive, follow your healthcare provider’s advice for treatment (often antibiotics) and avoid close contact with others to prevent spreading the infection. Stay hydrated and monitor symptoms until fully recovered.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

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 17, 2026. · Read our editorial policy