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  2. Quest Diagnostics says data breach could have hit 11.9 ... - AOL

    www.aol.com/news/quest-diagnostics-says-data...

    Quest Diagnostics Inc said on Monday it was notified by a billing collections vendor that an unauthorized user gained access to information on nearly 11.9 million patients, including credit card ...

  3. Quest Diagnostics Is a Wreck Amidst Covid-19 Testing Declines

    www.aol.com/news/quest-diagnostics-wreck-amidst...

    One of the companies that benefitted hugely from the Covid-19 pandemic was diagnostic testing company Quest Diagnostics Inc (NYSE:DGX), which operates a national network of full-service clinical ...

  4. Quest Diagnostics - Wikipedia

    en.wikipedia.org/wiki/Quest_Diagnostics

    In November 2018, Quest launched QuestDirect, a consumer-initiated testing service that allows patients to order health and wellness lab testing from home. [29] [30] In March 2020, the company launched a COVID-19 testing service. [31] As of July 2020, Quest had performed more than 9.2 million COVID-19 molecular tests and 2.8 million serology ...

  5. Positive and negative predictive values - Wikipedia

    en.wikipedia.org/wiki/Positive_and_negative...

    The positive predictive value (PPV), or precision, is defined as = + = where a "true positive" is the event that the test makes a positive prediction, and the subject has a positive result under the gold standard, and a "false positive" is the event that the test makes a positive prediction, and the subject has a negative result under the gold standard.

  6. Analytical quality control - Wikipedia

    en.wikipedia.org/wiki/Analytical_quality_control

    Constituents submitted to the analytical laboratory must be accurately described to avoid faulty interpretations, approximations, or incorrect results. [2] The qualitative and quantitative data generated from the laboratory can then be used for decision making.

  7. Laboratory quality control - Wikipedia

    en.wikipedia.org/wiki/Laboratory_quality_control

    Laboratory quality control is designed to detect, reduce, and correct deficiencies in a laboratory's internal analytical process prior to the release of patient results, in order to improve the quality of the results reported by the laboratory.

  8. Quest Diagnostics raises 2024 profit and revenue forecast on ...

    www.aol.com/news/quest-diagnostics-raises-2024...

    (Reuters) - Laboratory operator Quest Diagnostics raised its 2024 profit and revenue forecast on Tuesday after beating first-quarter estimates on robust demand for its diagnostic tests.

  9. Clinical Laboratory Improvement Amendments - Wikipedia

    en.wikipedia.org/wiki/Clinical_Laboratory...

    Issued to a laboratory in which a physician, midlevel practitioner or dentist performs specific microscopy procedures during the course of a patient's visit. A limited list of provider-performed microscopy procedures is included under this certificate type, which are categorized as moderate complexity testing. Certificate of Registration