In general, testing involves sending samples of blood, stool and urine to a reference laboratory.

Stool guaiac test for fecal occult blood (gFOBT) sensitivity varies depending on the site of bleeding.

Significant amounts of blood can be lost without producing visible blood in the stool, estimated as 200 ml in the stomach, 100 ml in the duodenum, and lesser amounts in the lower intestine.

A baby stool?

Stand on the stool.

Put down that stool.

This stool ain't comfortable.

I'm no stool pigeon!

Fetch a stool, Antoninus.

Look, there's a stool.

And stay off my stool.

May I borrow a stool?

Was he a stool pigeon?

Sit down on the stool.

Highest concentrations were found in liver, lung tissue, and stool.

Ji Oh, there's a stool there too.

I am no stool pigeon, Mr. Devlin.

The last stool on the other end.

Better than the stool I had in London, eh, Mr. Carton?

That's okay, because there's a team of research scientists in Canada who have now created a stool sample, a fake stool sample which is called RePOOPulate.

About the stool pigeon, Joe... We made arrangements.

Professional stool pigeon clipped me for 50 bucks.

Make a sniveling stool pigeon out of me!

Let's see you imitate somebody now, stool pigeon.

You can't really call him a stool pigeon.

In the absence of hematemesis, an upper source for GI bleeding is likely in the presence of at least two factors among black stool, age 50 years, and blood urea nitrogen creatinine ratio 30 or more.

You ought to trade Tierney in. Get yourself a more reliable stool pigeon.

Meconium is the earliest stool of a mammalian infant.

There is now a new career path called stool donor.

Also a stool pigeon. He planted the shiv on Collins.

No comment, and all the time he's got my stool.

I think I'll be getting back to me stool, Miss Maggie.

She sat on a traditional stool and spread her legs wide apart.

In blood?

She'll go to a new town, drift up to the right bar stool...

I am against everything, Marechera declared in The Bar Stool Edible Worm, one of his most popular poems

In cold blood?

Yes, in blood!

It's blood. Blood?

The physician may also take a stool sample to test for infections or bacteria.

Stool culture was considered by some researchers to be the most reliable technique, but a recent study found stool culture only detected 83 of individuals infected when compared to polymerase chain reaction (PCR) testing.

There is no change in blood flow, in dilatation of the blood vessels.

Some researchers have reported no correlation between number of organisms present in stool samples and the level of symptoms.

Blood in my veins.

It's signed in blood!