Our Test Directory includes detailed information, guides, and references for many of our tests. This includes test and result codes, specimen collection requirements, specimen transport considerations, and methodology.
What's New
September 2025 - TestDirectory AI Chat launches. Get a sneak peak without breaking the bank! Even better, you can learn something new, too!
August 2025 - Happy to share that we've added the ability to select multiple service areas when searching for your test. This will help you get there faster and easier.
August 2026 - New-Announcement - Happy to share that we've added the ability to select multiple service areas when searching for your test. This will help you get there faster and easier.
December 28, 2025 - Quest AI Assistant now supports natural language queries for test selection.
December 15, 2025 - Holiday schedule: Lab hours and specimen transport information.
June 30, 2026 - New release:
• Enhanced reflex test information and details, now including result codes
• Direct hyperlinks to orderable components of tests and reflexes (Note: This feature requires selecting a Service Area)