The use of far less expensive tests and procedures has also increased dramatically.

I don't regret all those expensive tests they ran on Zap, because we had to know.

Supplement 1 is a particularly difficult and expensive test to pass.

Those testing positive for drugs would take a second, more expensive test.

A second, more expensive test would be given to those failing the first test, board officials said.

These can be detected by drug testing labs, but some less expensive tests do not look for them.

Critics contend that less expensive tests can help obtain similar results.

It will be an expensive test if the are not careful.

It can be an inexpensive way to identify which patients need expensive tests.

An emergency room doctor orders several common but expensive tests to determine if a heart attack has occurred.