21.   Take a urine test and send it to an independent laboratory for testing.

22.   The arrest warrant was issued soon after authorities received the DNA results from the independent laboratory that conducted the tests, Thornton said.

23.   The systems were licensed after months of technical and legal scrutiny, including testing at an independent laboratory.

24.   The Underwriters Laboratories are a group of independent laboratories sponsored jointly by manufacturers, insurance companies and other interested parties.

25.   The Wistar Institute has pledged to find two or three independent laboratories to do the tests.

26.   They have also agreed to have the Coast Guard monitor their overboard discharges and send samples to an independent laboratory to be tested.

27.   They can also conduct independent electronic laboratory experiments.

28.   To devise the rating system, independent laboratories had experts attack safes using standard burglar tools.

29.   To recruit their subjects, medical schools and independent laboratories are raising the stipends to compensate them for their time, inconvenience and risk.

30.   A federal Food and Drug Administration test was positive for salmonella, while tests by three independent laboratories were negative, Carolina Prime Pet said.