TSC Ratings' Updates: Quest Diagnostics

Each business day, TheStreet.com Ratings updates its ratings on the stocks it covers. The proprietary ratings model projects a stock's total return potential over a 12-month period, including both price appreciation and dividends. Buy, hold or sell ratings designate how the Ratings group expects these stocks to perform against a general benchmark of the equities market and interest rates.

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The following ratings changes were generated on July 28.

Quest Diagnostics(DGX Quote), together with its subsidiaries, provides diagnostic testing, information and services in the U.S. DGX has been upgraded to buy.

With strong top-line growth, Quest Diagnostics' second-quarter fiscal-year 2008 net sales advanced 12%, with the AmeriPath acquisition contributing about 8% to the growth. Revenue increased to $1.84 billion from $1.64 billion a year ago.