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Hawaii, Arkansas and Oklahoma Lead the Nation for Methamphetamine Use in the Workforce, Reveals Quest Diagnostics Drug Testing Index™

MADISON, NJ, September 2, 2011 — Quest Diagnostics Incorporated (NYSE: DGX), the world's leading provider of diagnostic testing, information and services, today issued its annual report on U.S. worker drug use, the Quest Diagnostics Drug Testing Index™. The study includes its first state-by-state analysis of methamphetamine positives, based on more than 4.5 million urine specimens collected from the general U.S. workforce from January-December 2010, revealing that several Western and Midwestern states register dramatically higher workforce positive prevalence rates for methamphetamine than the national average. The report also shows that while efforts around the country to control availability of the highly addictive substance and educate against its use may be making progress in some areas, the drug's attraction among U.S. workers may be moving eastward.

Among the 42 states with sufficient data to compare to the national average for positive workplace drugs tests for methamphetamine in 2010, those notably above were:

• Hawaii - 410% greater than the national average
• Arkansas - 280% greater than the national average
• Oklahoma - 240% greater than the national average
• Nevada - 180% greater than the national average
• California - 140% greater than the national average
• Wyoming - 130% greater than the national average
• Utah - 120% greater than the national average
• Arizona - 100% greater than the national average
• Kansas - 80% greater than the national average

"While the western half of our country consistently struggles with dramatically higher methamphetamine positives than the nation as a whole, the American workforce overall faces a continued national challenge, and our data suggest that methamphetamine's stronghold may be moving eastward into the Midwest and South," said Dr. Barry Sample, Director of Science and Technology for Quest Diagnostics Employer Solutions. "In 2010 alone, thousands of U.S. workers tested positive for this highly addictive substance that can affect behavior and judgment, and quickly change the course of a life."

While overall positivity for methamphetamine use in the U.S. general workforce dropped dramatically from 0.18% in 2006 to 0.11% in 2008, the decline in the drug's use appears to have halted thereafter, with a 0.10% positivity rate in both 2009 and 2010. Regional analysis of the same five-year period suggests that some high prevalence areas may be showing improvement while others are rising in comparison to the national average in recent years.

*Percent Difference in Positive Prevalence Rates for Methamphetamine in Regional Divisions (as defined by the US Census Bureau) as Compared to the Overall U.S. National Data - Urine Drug Tests, General U.S. Workforce as a percentage of all tests for amphetamines.

The Eastern border of the nation so far remains relatively insulated from methamphetamine prevalence in the workforce. New York fared well below the national average in 2010, as did Washington DC, and Massachusetts. Methamphetamine prevalence in Georgia was 20% higher than the national average. Recent news reports tell of large-scale "drug busts" seizing millions of dollars of the substance per incident in various parts of the country, including the East.

Methamphetamine is a highly addictive drug stimulant. The substance produces short, intense periods of euphoria, alertness, concentration, and energy as well as irritability, restlessness and aggressiveness, among other effects. Methamphetamine is also known for its intense withdrawal symptoms, including fatigue and depression, which can last for weeks and months in chronic users.

Dr. Steven Shoptaw, Professor at the University of California, Los Angeles (UCLA), Department of Family Medicine, and a National Institute on Drug Abuse (NIDA)-funded clinical researcher focused on medications and behavioral therapies for methamphetamine dependence, commented on the study findings, "In the mid 2000's, indicators were that use of methamphetamine was dropping across the population. But this is a highly addictive substance, and in the clinics, we saw demand for treatment remain high during that time. While many people use methamphetamine recreationally for its euphoric effects, I've also worked with patients who, paralyzed by the recession and juggling multiple jobs and family responsibilities, started using methamphetamine for its 'functional' stimulant benefit. What they didn't realize is that methamphetamine can wreak havoc on their judgment, their health, their families and their lives. For these sorts of people, we now provide economic counseling in the treatment setting, helping people to live their lives in scale, without using methamphetamine."

Recently, cross-border drug cartels have been reported to be operating highly productive "superlabs" that are creating new access points to methamphetamine in the U.S. At the same time, new methods for making small amounts of methamphetamine have proliferated in the U.S., creating unprecedented mobility in the domestic "meth lab." Attempts to control the availability of over-the-counter medications used in methamphetamine production persist, but do not appear to date to have completely curbed the illicit manufacturing. In fact, illegally acquiring and reselling over-the-counter medications used to make methamphetamine has been noted as a flourishing cottage industry. According to the most recent data from the U.S. Department of Health and Human Services (SAMHSA 2009 National Survey on Drug Use and Health), "past-month" methamphetamine use rose in 2009 after declining between 2006-2008.

Five-Year Positivity Rate for Cocaine in the U.S. General Workforce Drops 65%; Amphetamine Up 57%

Other results from the Quest Diagnostics Drug Testing Index show that positive workforce drug tests for cocaine in the general U.S. workforce continued to decline in 2010 vs. 2009, down 13.8% (0.25% vs. 0.29%) and down 65% (0.25% vs. 0.72%) during the five-year period 2006-2010. However, positive workforce drug tests for amphetamine in the U.S. general workforce continued to increase in 2010 vs. 2009, up 15.8% (0.57% vs. 0.66%) and up 57% (0.42% vs. 0.66%) during the five-year period 2006-2010. Since Quest Diagnostics began tracking positive workforce drug tests in the Drug Testing Index in 1988, there has been a steady decline in overall positives in the U.S. general workforce.

About the Drug Testing Index™ (DTI)

The Quest Diagnostics Drug Testing Index is published as a public service for government, media and industry and has been considered a benchmark for national trends since its inception in 1988. It examines positivity rates — the proportion of positive results for each drug to all such drug tests performed — among three major testing populations: federally mandated, safety-sensitive workers; the general workforce; and the combined U.S. workforce. Federally mandated, safety sensitive workers include pilots, bus and truck drivers, and workers in nuclear power plants, for whom routine drug testing is mandated by the U.S. Department of Transportation and the Nuclear Regulatory Commission.

About Quest Diagnostics Employer Solutions Business

Quest Diagnostics' Employer Solutions Business offers a comprehensive menu of testing and collection programs to manage employers' pre-employment and employee drug testing, wellness services, national clinical testing, background checks and OSHA requirements. A national leader in drug testing, Quest Diagnostics performed approximately 7 million drug tests in 2009, and leads the industry in drug-testing program options and tools, including urine, oral fluid and hair testing; customized panels; sport-related testing for performance-enhancing drugs; specialized testing of healthcare professionals, and a drug testing program ROI calculator, available online at www.employersolutions.com/roi. The Quest Diagnostics Employer Solutions Division's Blueprint for Wellness (www.BlueprintforWellness.com), a health risk identification solution and education tool for employers, uses laboratory insights to provide measurable results that help participants manage health risk more effectively, in turn reducing healthcare spending and costs.

About Quest Diagnostics

Quest Diagnostics is the world's leading provider of diagnostic testing, information and services that patients and doctors need to make better healthcare decisions. The company offers the broadest access to diagnostic testing services through its network of laboratories and patient service centers, and provides interpretive consultation through its extensive medical and scientific staff. Quest Diagnostics is a pioneer in developing innovative new diagnostic tests and advanced healthcare information technology solutions that help improve patient care. Additional company information is available at: www.questdiagnostics.com.

The Drug Testing Index © 2011 Quest Diagnostics Incorporated. All rights reserved.

Tables Follow

Table 1. Annual Positivity Rates – Urine Drug Tests
(For Combined U.S. Workforce)
(More than 6 million tests from January to December 2010)

Table 2. Positivity Rates By Testing Category – Urine Drug Tests

Table 3. Positivity Rates By Testing Reason – Urine Drug Tests
(For Federally Mandated, Safety-Sensitive Workforce)
(More than 1.5 million tests from January to December 2010)

Table 4. Positivity Rates By Testing Reason – Urine Drug Tests
(For General U.S. Workforce)
(More than 4.5 million tests from January to December 2010)

Table 5. Positivity Rates By Drug Category – Urine Drug Tests
(For Federally Mandated, Safety-Sensitive Workforce, as a percentage of all such tests)
(More than 1.5 million tests from January to December 2010)

Table 6. Positivity Rates By Drug Category – Urine Drug Tests
(For General U.S. Workforce, as a percentage of all such tests)
(More than 4.5 million tests from January to December 2010)

Table 7. Positivity Rates By Drug Category – Urine Drug Tests
(For Combined U.S. Workforce, as a percentage of all such tests)
(More than 6 million tests from January to December 2010)

Table 8. Non-Negative Rates By Specimen Validity Test (SVT)³ Category – Urine Drug Tests
(For Federally Mandated, Safety-Sensitive Workforce, as a percentage of all such tests)
(More than 1.5 million tests from January to December 2010)

Table 9. Non-Negative Rates By Specimen Validity Test (SVT)³ Category – Urine Drug Tests
(For General U.S. Workforce, as a percentage of all such tests)
(More than 4.5 million tests from January to December 2010)

Table 10. Non-Negative Rates By Drug/SVT Category – Urine Drug Tests
(For Federally Mandated, Safety-Sensitive Workers, as a Percentage of All Non-Negatives)
(More than 25 thousand non-negative test results from January to December 2010)

Table 11. Non-Negative Rates By Drug/SVT Category – Urine Drug Tests
(For General U.S. Workforce, as a Percentage of All Non-Negatives)
(More than 200 thousand non-negative test results from January to December 2010)

Table 12. Non-Negative Rates By Drug/SVT Category – Urine Drug Tests
(For Combined U.S. Workforce, as a Percentage of All Non-Negatives)
(More than 225 thousand non-negative test results from January to December 2010)

1. Approximately 400,000 tests.
2. More than 500,000 tests.
3. Specimen validity testing is the evaluation of a specimen to determine if it is consistent with a normal human specimen. Tests for specimen validity include tests to determine whether a specimen is adulterated or substituted.

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For additional information, please click the below links to information maps and graphs:

Annual positivity rates — Urine drug tests for combined U.S. workforce >
Positivity rates by testing category — Urine drug tests >
Positivity rates by testing reason — Urine drug tests for federally mandated, safety-sensitive workforce >
Positivity rates by testing reason — Urine drug tests for general U.S. workforce >
Positivity rates by drug category — Urine drug tests for federally mandated, safety-sensitive workforce >
Positivity rates by drug category — Urine drug tests for general U.S. workforce >
Positivity rates by drug category — Urine drug tests for combined U.S. workforce >
Non-negative rates by Specimen Validity Test (SVT) category — Urine drug tests for federally mandated, safety-sensitive workforce, as a percentage of all such tests >
Non-negative rates by Specimen Validity Test (SVT) category — Urine drug tests for general U.S. workforce, as a percentage of all such tests >
Non-negative rates by drug/SVT category — Urine drug tests for federally mandated, safety-sensitive workforce, as a percentage of all non-negatives >
Non-negative rates by drug/SVT category — Urine drug tests for general U.S.sensitive workforce, as a percentage of all non-negatives >
Non-negative rates by Drug/SVT category — Urine drug tests for combined U.S. workforce, as a percentage of all such tests
A map of the U.S. depicting overall drug test positive rates >
A map of the U.S. depicting overall amphetamines positive rates >
A map of the U.S. depicting overall cocaine positive rates >
A map of the U.S. depicting overall marijuana positive rates >
A map of the U.S. depicting overall opiate positive rates >
A map of the U.S. depicting overall phencyclidine positive rates >

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