Webtesting purchased by you through quest’s online store is ordered by a licensed healthcare professional authorized to order laboratory testing in accordance with state laws. Webquest ® is the brand name used for services offered by quest diagnostics incorporated and its affiliated companies. Quest diagnostics incorporated and certain affiliates are clia. Webfind answers to frequently asked questions about scheduling appointments at quest patient service centers. Learn how to create a quest account, provide personal. Webschedule or reschedule lab tests online at quest diagnostics, a leading provider of diagnostic information services…