They use the latest technology and equipment combined with continually improving screening techniques.

Although most say they will still follow the official guidelines, they voice increasing uncertainty about the value of existing screening techniques.

He was going to the federal court to challenge a screening technique used around the country that looks at suspicious behavior patterns to identify potential terrorists.

Such screening techniques and early intervention therapies have sharply lowered the mortality rate in children with sickle cell disease.

It is typically used as a secondary screening technique in high throughput screening.

And while an owner may be able to accomplish that by telephone, there are more effective screening techniques.

Proving that a screening technique like mammography can prevent death from breast cancer is difficult.

Forty million people use such interactive formats, he said, in contrast with the 100,000 Web sites for which screening techniques might be feasible.

But Mr. Davis said that screening techniques had been developed.

With advanced screening techniques, it is possible for breast cancer to be identified at an early stage.