Laboratories Northwest

The Quest Diagnostics difference. Bringing together quality, speed, and technology to power advanced, affordable diagnostics for all. No trade-offs required.

We believe in harnessing science for human good. And so we work day and night, around the world, to deliver answers for all your health questions-whether you're a provider, drug developer, hospital, medical researcher or patient. That means everything from advancing diagnostic testing to helping launch new drugs to offering new perspectives through data, all drawing from a deep well of scientific expertise. So when you need trusted information to make clear, confident health decisions, consider us your source.Laboratory Corporation of America Holdings is listed on the New York Stock Exchange (NYSE) under the ticker symbol LH. Labcorp headquarters are located in Burlington, North Carolina.