Quest Diagnostics, headquartered in the U.S. is a leading organization providing diagnostic information services that patients and doctors require in order to make better healthcare decisions. Apart from U.S. it operates in India, Ireland, Mexico and the United Kingdom as well.
The various products and services offered are diagnostic testing services, diagnostic products like kits, reagents and devices, clinical trials, healthcare IT, welness & risk management and drug screening. It has been ranked 341 on the Fortune 500 list in 2013 and has been awarded and recgnized by various other groups. It has a workforce of around 41,000 employees and operates more than 2,100 patient service centres.