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NEW YORK ( TheStreet) -- Quest Diagnostics (NYSE: DGX) hit a new 52-week high Monday as it is currently trading at $61.70, above its previous 52-week high of $61.49 with 118,038 shares traded as of 10:15 a.m. ET. Average volume has been 1.2 million shares over the past 30 days. Quest has a market cap of $9.58 billion and is part of the health care sector and health services industry. Shares are up 5.3% year to date as of the close of trading on Friday. Quest Diagnostics Incorporated provides diagnostic testing, information, and services in the United States and internationally. The company has a P/E ratio of 20.9, below the average health services industry P/E ratio of 22.3 and above the S&P 500 P/E ratio of 17.7.