LabCorp is the second- largest U.S. medical testing company and offers many of the same genetic tests that Quest does.

FORBES: Magazine Article

LabCorp lowered its sales, general and administrative expenses to 21% of revenue last year from 26% in 1999, enabling it to almost triple the net margin to 11.8%.

FORBES: Magazine Article

LabCorp laboratories across the nation also were collecting samples.

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LabCorp recently pulled even with Quest in market capitalization.

FORBES: Connect

Waller has owned LabCorp since late 2003.

FORBES: Good Genes