What services are available at Quest Diagnostics laboratories?

Quest Diagnostics Laboratories offer medical diagnostic tests, such as blood and body fluid testing, tissue pathology, health screening and drug tests. Quest primarily performs testing services at the order of other medical professionals.

Some diagnostic tests performed by Quest include screenings for prediabetes, Vitamin D deficiency, heart disease, HIV and Hepatitis C. They also perform screenings for several cancers, such as cervical, colorectal, ovarian and thyroid.

Patients are usually required to bring a testing order from a treating physician. Other instances include required drug testing as a condition of employment. Quest performs urine, oral fluid and hair drug testing. Appointments with Quest Diagnostics are not required but are available for expediency.