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Stool culture and GI panel

Also called: Stool PCR panel, GI pathogen panel, Stool test for infection

Stool tests look for bacteria, viruses, and parasites that cause diarrhea.

SampleA stool sample
Fasting?Usually not needed
Results1 to 3 days
Good to knowOne result rarely tells the whole story. Your provider looks at your results together with your symptoms, exam, and other tests.

What the test is

Most diarrhea clears on its own and doesn't need testing.

Why it's done

  • Diarrhea with fever, blood, or severe illness
  • Diarrhea lasting more than a week
  • After travel or a food poisoning outbreak

Getting ready and what happens

  • Collect the sample in the container provided, without urine or toilet water.

How the test is done

  • You collect stool at home or in the clinic.

What the results mean

Positive

Identifies the germ. Many need only fluids; some need antibiotics.

When a result needs quick action

Call your provider todayBloody diarrhea, high fever, signs of dehydration, or very little urine

Questions to ask your provider

  • What do my results mean for me?
  • Do I need to repeat this test or have other tests?

Related conditions

Related medicines

Related tests

Sources

Last updated 2026-11-13.