Quest Diagnostics is an American clinical laboratory. Quest Diagnostics Bill is a Fortune 500 company that operates in the United States, Puerto Rico, Mexico, and Brazil. Quest also has collaboration agreements with various hospitals and clinics around the world.


In 2020, the company employed approximately 48,000 people and had sales of more than US $ 7.7 billion in 2019. The company provides access to diagnostic testing services for cancer, cardiovascular disease, infectious disease, neurological disease, COVID-19, and the workplace. The court ordered drug tests.

QuestDiagnostics has the largest clinical trials network in the United States, with laboratories in most major cities, as well as Mexico, the United Kingdom, and India. The company also operates four esoteric labs, 40 outpatient AP labs, and 160 smaller rapid response labs.

QuestDiagnostics is an online portal for patients and healthcare professionals. Patients and healthcare professionals can access QuestDiagnostics and train staff to take action to improve health outcomes. Quest Diagnostics offers free quotes to patients and healthcare professionals. It is covered by MetroPlus, Affinity, Fidelis Care, Healthfirst, and most other New York City health plans. The Quest Diagnostics bill can save patients significant amounts of money by reducing or eliminating their out-of-pocket costs and helping them get the care they need to stay healthy.


QuestDiagnostics (NYSE: DGX) enables people to take action to improve health outcomes. Our diagnostic results come from the world’s largest clinical laboratory results database and reveal new ways to identify and treat disease, inspire healthy behaviors, and improve health management. Quest serves one in three American adults and half of all American doctors and hospitals each year, and our 47,000 employees know that our diagnostic expertise, in the right hands and in the right context, can inspire transformative interventions.

Patients can receive samples at any of the company’s 2,250 patient centers. Approximately 550,000 patients are seen in a normal working day. QuestDiagnostics supports physicians and healthcare organizations with state-of-the-art connectivity solutions. The company is a leading provider of drug screening and pre-hire risk assessment to the life insurance industry. It is the world’s second-largest provider of clinical trials for new drugs.