Sunquest Information Systems, Inc. is a leading company in laboratory and diagnostic information solutions with more than 1,400 hospitals and commercial laboratories using its solutions worldwide. Sunquest introduced the concept of the Five Rights of Laboratory Testing(tm), to establish the importance of the laboratory in healthcare.In 2007, Vista Equity Partners, a private equity firm in San Francisco, completed a full buyout of the company. Roper Industries acquired Sunquest in 2012.