At the closing bell, WHR is up about 0.7%, while DGX is off about 0.7% on the day Tuesday.

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Quest Diagnostics, Inc. ( NYSE: DGX), according to The Online Investor.

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According to the ETF Finder at ETF Channel, WHR and DGX collectively make up 1.57% of the iShares Morningstar Mid Value Index Fund ETF (JKI) which is higher by about 0.7% on the day Tuesday.

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The Piccolo takes 12.5 minutes to complete a reading, and delivers results (so says Abaxis) just as accurate as those done at labs run by giants Quest Diagnostics (nyse: DGX - news - people ) and Laboratory Corp. of America.

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Among the largest underlying components of RYH, in trading today Quest Diagnostics, Inc. ( NYSE: DGX) is up about 0.4%, Medco Health Solutions, Inc. ( NYSE: MHS) is up about 0.1%, and Varian Medical Systems, Inc. ( NYSE: VAR) is higher by about 2.2%.

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"In the past you needed to do a culture" to test a person's virus, says Jorge Leon, former head of DNA testing at Quest Diagnostics (nyse: DGX - news - people ) and now president of molecular diagnostics consulting firm Leomics Associates.

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At issue is the way that Medicare reimburses everyone from the big laboratory companies such as the Laboratory Corp of America (LH:NYSE) and Quest Diagnostics Inc. (DGX:NYSE), to the molecular diagnostic labs inside academic hospitals, and especially smaller firms that make proprietary tests used by doctors to more effectively target treatments to patients with conditions like cancer.

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