Nearly 7 out of 10 people have low levels of vitamin D. Click here to learn more about vitamin D testing.

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Based on client feedback, we have upgraded the Quest Diagnostics Clinical Education website.  We value your input. Please provide feedback about the changes and any suggestions you may have to help us ensure the website serves your Clinical Education needs. Take the survey.

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Testing a panel of 12 single-nucleotide polymorphisms may help identify people at increased risk of atrial fibrillation and stroke, according to a recent study by researchers from the Lund University in Malmö, Sweden, the Broad Institute, Harvard Medical School, Cambridge, MA, and Quest Diagnostics. The award-winning poster may be accessed by ACC attendees through the ACC.14 Attendee Portal.

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Compared to the general population, a woman with a confirmed BRCA1 or BRCA2 mutation is at greater risk of developing cancer during her lifetime—up to an 85% risk of breast cancer and up to a 40% risk of ovarian cancer. Her children, siblings and parents have a 50% chance of having the same autosomal dominant mutation and facing comparable risks.

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Genetics and Genomics in Clinical Medicine: Perspectives In Personalized Medicine

Harvard Medical School’s professor of genetics, Dr. Kucherlapati discusses how the human genome sequence is affecting our understanding of human health and disease, explains how... Read more

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Hemoglobinopathy Testing: It’s All GRΣΣK To Me!

Genetic counselor Cathi Franklin explains hemoglobinopathies and their types, describes strategies for evaluating a patient and helps attendees to recognize the clinical and laboratory findings... Read more

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Is it Osteoarthritis or Rheumatoid Arthritis?

Osteoarthritis (OA) is the most common form of arthritis in the US, affecting 14% of adults over age 25. Rheumatoid arthritis (RA) is a common... Read more

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A step toward simplicity for a complex analyte.

Authors: Bystrom CE.Nassar A, Cohen C, Zhou W, Lynch KA, Barker EA, Vanderbilt BL, Thompson J, Heyman ER, Olson A, Lange H, Siddiqui MT.

Clin Chem. 2011;57:1091-1092.


'Criteria' aPL tests: report of a task force and preconference workshop at the 13th International Congress on Antiphospholipid Antibodies, Galveston, Texas, April 2010.

Authors: Pierangeli SS, de Groot PG, Dlott J, Favaloro E, Harris EN, Lakos G, Ortel T, Meroni PL, Otomo K, Pengo V, Tincani A, Wong R, Roubey R.Nassar A, Cohen C, Zhou W, Lynch KA, Barker EA, Vanderbilt BL, Thompson J, Heyman ER, Olson A, Lange H, Siddiqui MT.

Lupus. 2011;20:182-190.


A multisite performance study comparing the reading of immunohistochemical slides on a computer monitor with conventional manual microscopy for estrogen and progesterone receptor analysis.

Quest Diagnostics Authors: Agersborg, S

Authors: Nassar A, Cohen C, Zhou W, Lynch KA, Barker EA, Vanderbilt BL, Thompson J, Heyman ER, Olson A, Lange H, Siddiqui MT.Nassar A, Cohen C, Zhou W, Lynch KA, Barker EA, Vanderbilt BL, Thompson J, Heyman ER, Olson A, Lange H, Siddiqui MT.

Am J Clin Pathol. 2011;135:461-467.


A new immunohistochemical ER/PR image analysis system: a multisite performance study.

Quest Diagnostics Authors: Agersborg, S

Authors: Nassar A, Cohen C, Zhou W, Lynch KA, Heyman ER, Olson A, Lange H, Siddiqui MT.Nassar A, Cohen C, Zhou W, Lynch KA, Barker EA, Vanderbilt BL, Thompson J, Heyman ER, Olson A, Lange H, Siddiqui MT.

Appl Immunohistochem Mol Morphol. 2011;19:195-202.


Age-related differences in patterns of increased Bordetella pertussis antibodies.

Authors: Prince HE, Lieberman JM, Cherry JD.Nassar A, Cohen C, Zhou W, Lynch KA, Barker EA, Vanderbilt BL, Thompson J, Heyman ER, Olson A, Lange H, Siddiqui MT.

Clin Vaccine Immunol. 2012;19:545-550.


Analysis of resistance, cross-resistance and antimicrobial combinations for Pseudomonas aeruginosa isolates from 1997 to 2009.

Authors: Master RN, Clark RB, Karlowsky JA, Ramirez J, Bordon JM.Nassar A, Cohen C, Zhou W, Lynch KA, Barker EA, Vanderbilt BL, Thompson J, Heyman ER, Olson A, Lange H, Siddiqui MT.

Int J Antimicrob Agents. 2011;38:291-295.