The sample may also be tested for white blood cells.

Every day, samples of gas were tested in this building for quality.

The sample was tested at two laboratories with the same results.

The samples are tested and a computer analysis of the steel given within six minutes.

At first, they tested samples from patients with conditions that were known to the researchers.

In practice, rather than testing a population, a representative sample or group is tested.

Two other samples tested at the same time showed no contamination.

The sample can be tested in a lab to see what is causing the problem.

These samples can be tested to see if they recognize a foreign protein.

But only 250 samples of bacon were tested by the agency in 1993.