A lab test appointment is not required for Quest Diagnostics, but some locations do offer appointments, according to the company's website. Appointments are made online at QuestDiagnostics.com, or by contacting the local Quest Diagnostics branch.
The Make an Appointment link is located under the Take Action heading on the left side of the home page at QuestDiagnostics.com. The search results are based on patient location, the reason for the test and the preferred date and time.
Early mornings are the busiest time for Quest Diagnostic procedures, explains the company. As of 2015, the wait time for individuals without an appointment is generally shorter after 10 a.m.