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PEth and Dried Blood
Spot Testing

Phosphatidylethanol (PEth) is a mid-to-long-term alcohol biomarker that incorporates into cell membranes throughout the body after alcohol consumption. In toxicology testing, PEth is easily detected in blood from incorporation into the membranes of red blood cells.
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PEth and Dried Blood Spot Testing

We offer PEth testing in dried blood spots and whole blood (venipuncture). PEth may be detected in blood for up to approximately 2-4 weeks. However, there may be isolated circumstances where PEth may be detected at 6 weeks or more. Learn more about PEth by reading the relevant foundational research here.

PEth Resources

Explore specimen-specific resources, available drug panels, collection instructions, and other helpful information – all in one place.

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Collection Supplies

USDTL provides all required drug and alcohol testing collection supplies at no additional cost. Orders are placed and tracked through our secure web portal, ensuring you always have what you need—when you need it. Click the button below to contact us about ordering collection supplies.
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Certifications & Accreditations

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Whether you’re visiting us in person or simply want to know where we’re based, here’s some helpful information about our location

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Relevant Videos

The Benefits of Using PEth Testing

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ToxTime: Alcohol is STILL A Drug

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Time Dose & Frequency

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ToxTime: Identifying and Understanding Fetal Alcohol Spectrum Disorders (FASDs)

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Ready to Partner with USDTL?

For over 25 years, USDTL has delivered accurate, reliable laboratory testing services across 200 locations nationwide. From hospitals to government agencies to employers, we partner with organizations that demand precision.

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Albert Berger

Chief Executive Officer

Albert Berger brings more than two decades of executive leadership in toxicology, diagnostics, and forensic laboratory services to his role as CEO of United States Drug Testing Laboratories (USDTL). A seasoned operator and value creator, he has led multiple highly successful company acquisitions, guiding Redwood Toxicology Laboratory through three exits and Confirm Biosciences through two, generating significant returns for investors and stakeholders at each turn.

Albie joined USDTL in January 2025 following a strategic investment by Northlane Capital Partners, bringing a clear mandate to accelerate growth, modernize operations, and expand the company’s leadership position in forensic and clinical toxicology. Under his guidance, USDTL is advancing its testing methodologies, integrating automation to improve efficiency and turnaround times, and broadening its market footprint across healthcare sectors.

Prior to USDTL, Albie served as CEO of Confirm Biosciences, growing revenues from $12M to $25M and completing two acquisitions, first to Clinical Reference Laboratory for $25M and then to Healgen Scientific for $45M. Before that, he spent over a decade at Redwood Toxicology Laboratory, ultimately serving as EVP and General Manager and growing revenues from $12M to $105M through multiple ownership transitions, including acquisitions by American Capital Strategies for $80M and Alere for $100M, before RTL was absorbed into Abbott Laboratories as part of Abbott’s $5.3B acquisition of Alere. He holds an MBA from Saint Mary’s College of California and a BS in Organizational Communication from Arizona State University. 

Grace De La Peña

Business Development Manager

Grace De La Peña is a Business Development Manager at USDTL with 13 years of experience helping organizations achieve their goals through strategic partnerships, client engagement, and innovative drug and alcohol testing solutions. She works closely with businesses, court programs, treatment facilities, universities, and industry partners to develop customized testing programs that support compliance, research initiatives, and evolving organizational needs. Her expertise includes business development, account growth, sales strategy, client retention, and relationship management. 

 A graduate of Aurora University with a Bachelor of Arts in Criminal Justice, Grace is passionate about simplifying the complexities of drug and alcohol testing for her clients. She partners with organizations to identify effective solutions, provides guidance throughout implementation, and helps ensure testing programs align with their operational, regulatory, or research objectives. She continues to strengthen her expertise through professional development and industry-focused certifications in consultative selling, customer engagement, and revenue growth strategies. Known for her collaborative approach and commitment to client success, Grace focuses on building trusted relationships, creating long-term value, and supporting sustainable growth through innovative and reliable testing services. 

Britany Ramey

Account Development Manager

Britany is an account development manager. She is very passionate about supporting her team, building long lasting client relationships, and driving business success. She enjoys collaborating with her team and clients, embracing new challenges, and overall helping contribute to a culture of growth. 

Britany found her start in client services with USDTL and worked her way up to her current position. She is a role model of our core values and applies those values to both her professional and personal life. She is confident in her ability to be outgoing and approaches every situation with a postive mindset. She also is able to provide outstanding customer service to our clients to ensure they are satisfied with their experience at USDTL.  

When she is not helping USDTL grow and maintain their books of business she can be found enjoying a non-fiction book while cuddling with her cat, River. She also enjoys coloring, going for nature walks, and listening to Taylor Swift on repeat. 

Denise Pineda

Account Development Manager

Denise Pineda serves as an Account Development Manager, where she focuses on helping clients achieve their goals through personalized support and strategic guidance.

Her passion for relationship building and problem-solving enables her to connect with clients, understand their unique objectives, and deliver solutions that drive success.

Denise enjoys collaborating with customers and colleagues alike to create positive experiences and lasting business partnerships.

Olivia Stack

Business Development Manager

Olivia Stack is a Business Development Manager at United States Drug Testing Laboratories (USDTL), where she partners with hospitals and health systems to support newborn toxicology testing programs. She specializes in business development, account management, and clinical education, helping healthcare organizations optimize their newborn drug testing workflows through consultative support, data-driven account reviews, and implementation of meconium
and umbilical cord tissue testing.

A graduate of the University of Tennessee, Knoxville, with a Bachelor of Science in Kinesiology and a minor in Business Administration, Olivia combines her healthcare background with a passion for building strong client relationships. She is committed to helping providers improve patient care while delivering exceptional service and support to hospitals across her territory.

Outside of work, Olivia enjoys traveling, spending time at the beach, staying active, and cheering on the Tennessee Volunteers.

Michelle McGraw

Senior Business Development Manager

Michelle McGraw is a Senior Business Development Manager at USDTL, where she partners with hospitals and health systems nationwide to deliver reliable, fast-turnaround toxicology testing solutions. Her primary focus is newborn drug testing, including meconium and umbilical cord tissue send-outs, helping labor and delivery, NICU, and laboratory teams implement testing programs that support both clinical decision-making and patient care. Michelle also works with clients on USDTL’s broader testing menu, including hair, fingernail, urine, and point-of-care drug and alcohol testing. 

 Known for building strong, long-term partnerships, Michelle takes a consultative approach with every client, working to understand each facility’s unique workflow before recommending the right testing solution. She prides herself on being a responsive, knowledgeable resource for the hospitals she works with, whether that means walking a team through panel options, coordinating onboarding, or simply being a reliable point of contact long after the paperwork is signed. 

 When she’s not partnering with hospitals across the country, Michelle enjoys playing pickleball, snowboarding, and traveling. 

Hannah Greenberg

Business Development Manager

Hannah Greenberg is a Business Development Manager at USDTL, where she partners with organizations to develop customized toxicology testing solutions and build lasting client relationships. With a background in Community Health Education, Hannah’s passion for supporting individuals and communities aligns closely with USDTL’s mission of protecting and enriching lives through innovative toxicology solutions. 

 Throughout her career, Hannah has focused on understanding organizational needs, developing strategic partnerships, and helping clients identify solutions that support their goals. At USDTL, she works with businesses, government agencies, treatment providers, and other organizations to develop customized testing programs that address their unique needs. 

 Known for her collaborative approach and commitment to client success, Hannah focuses on building trusted partnerships, providing responsive support, and creating long-term value for the organizations she serves. She is passionate about helping clients navigate their testing needs while contributing to USDTL’s continued growth and reputation as a leader in forensic toxicology. 

 Outside of work, Hannah enjoys spending time outdoors, wildlife photography, practicing yoga, staying active, spending time with family and friends, and enjoying time with her pets. 

Sandra Andrews

Senior Business Development Manager

With more than a decade of combined experience in account management, healthcare business development, and strategic partnerships, Sandra is passionate about building meaningful relationships that improve patient care and healthcare outcomes. Her career has spanned diagnostics, hospitals and healthcare organizations, and provider relations where she has partnered with clinical leaders to implement solutions that drive growth, strengthen operations, and enhance patient services. 

Sandra holds an MBA and a bachelor’s degree in psychology, bringing together business strategy and a deep understanding of human behavior. She believes that great partnerships are built on trust, integrity, and a genuine commitment to serving others. Whether collaborating with healthcare organizations or developing new business opportunities, her goal is to create lasting value while making a meaningful impact on the organizations and people she serves. 

Sandra values her family and enjoys experiencing life with her husband, adult kids, sisters and close friends.  In her free time, she enjoys long walks in nature, a good restaurant with live music, indulging in cheesy rom-coms, and any opportunity for a good laugh. 

Heath Lewis

National Account Business Development Manager

Heath Lewis brings more than 13 years of experience in the diagnostics industry, spanning clinical toxicology, laboratory operations, and strategic business development. Beginning his career in the Clinical Toxicology Laboratory at ARUP Laboratories, Heath earned his C(ASCP)CM certification while gaining hands-on experience with mass spectrometry, laboratory automation, specimen extraction, and high-complexity clinical testing. This technical foundation provides him with a deep understanding of the science, quality standards, and operational challenges that clinical laboratories face every day. 

 Transitioning into business development, Heath managed a multi-state territory for ARUP Laboratories, partnering with hospitals, health systems, and reference laboratories to develop diagnostic solutions that improved patient care and laboratory operations. He later expanded his diagnostics experience by joining an international diagnostics company, where he supported the commercialization of innovative nuclear magnetic resonance (NMR) technology and collaborated with healthcare organizations to advance precision diagnostics. 

Today, Heath brings his unique combination of laboratory expertise and commercial leadership to USDTL, where he partners with researchers, reference laboratories, health systems, and strategic industry partners to advance innovative toxicology testing solutions. He also supports enterprise initiatives and laboratory implementations, helping organizations successfully integrate new testing programs while building long-term partnerships that improve patient care. His firsthand understanding of clinical laboratory operations, combined with extensive business development experience, allows him to bridge the gap between scientific innovation and the practical needs of laboratories and healthcare organizations. 

Outside of work, Heath enjoys reading, creating art, playing the guitar, exploring the outdoors in his Jeep, camping, and snowboarding. 

Grace Miranda

Business Development Manager

Since 2013, Grace Miranda has built a successful career helping organizations modernize their testing programs through innovative, patient-centered solutions. She has partnered with Fortune 500 companies, private organizations, and government agencies in the criminal justice and treatment sectors to implement drug testing management systems that improve accuracy, efficiency, compliance, and outcomes. 

 She is known for her consultative approach, taking the time to understand each organization’s unique needs and delivering tailored solutions that create lasting value. Her ability to build strong, long-term relationships with clients and collaborate effectively across diverse teams has been a cornerstone of her success. 

 Outside of work, Grace enjoys watching sports, volunteering with nonprofit organizations, and planning and executing events. She is passionate about bringing people together, giving back to her community, and building meaningful relationships both personally and professionally.  

 Grace is excited to join USDTL, a global leader in forensic toxicology testing, where she looks forward to building on the company’s legacy of excellence. She is inspired by USDTL’s commitment to integrity, quality, innovation , and collaboration, and is eager to contribute her experience and passion for client success while helping advance its mission

Staci Hart

Director of Employer, Strategic & Partner Channels

Staci Hart is a results-driven executive with more than 23 years of experience in sales leadership, account management, contract management, business development, and executive management in tox. She has extensive expertise in the toxicology laboratory testing industry and a proven ability to lead strategic initiatives that drive business growth, operational excellence, and long-term client success. 

 Throughout her career, Staci has successfully managed complex contracts, strengthened partnerships, and ensured compliance within highly regulated environments. She is recognized for developing and maintaining trusted client relationships & identifying new business opportunities. 

 Staci is also known for her collaborative leadership style, and commitment to delivering measurable results. Staci excels at aligning business objectives with customer needs while fostering strong internal and external partnerships. Her passion for delivering exceptional customer service, developing in-depth product knowledge, and creating outstanding client experiences has established her as a trusted leader.   

Cliff Nau

Marketing Manager

Cliff Nau is a highly experienced global healthcare and diagnostics marketing leader, having worked with Fortune 500 and Global 500 organizations. Bringing extensive experience in marketing communications, brand strategy development, digital marketing, graphic design, and global team leadership. Through his career, he’s held leadership responsibility for brand stewardship of a $650 million division within Abbott Laboratories.

Having developed and implemented multiple impactful integrated campaigns, rebranding initiatives, and web consolidation projects, ensuring compliance with FDA and diagnostic product standards, Cliff looks to bring these talents to the USDTL organization and build on their legacy of being a pioneer in toxicology. Driving and creating high-performing sales collateral and deliver large-scale marketing programs from lead generation and content development to trade show coordination and public relations.

When Cliff isn’t developing USDTL’s latest brand initiative or marketing campaign, he spends his time with his many cats, gardening, barbequing and reading up on latest tech and gaming news.

Katanya Woods

Receiving Manager

Katanya Woods has more than 30 years of experience in the laboratory industry, spanning reference laboratories, hospital laboratories, and now a forensic testing environment. Throughout her career, she has developed expertise in laboratory operations, specimen processing, accessioning, and team leadership.

Having worked in multiple laboratory disciplines, Katanya has gained a comprehensive understanding of laboratory workflows from specimen receipt and handling through specimen processing. Her experience includes leadership in high-volume operations, implementing process improvements, training and mentoring staff, and leading cross-functional teams.

One of Katanya’s greatest professional passions is workflow design and operational efficiency. She enjoys evaluating laboratory processes, identifying opportunities for improvement, and implementing solutions that enhance productivity, improve quality, and create a better experience for employees and customers alike.

As a laboratory leader, Katanya believes in developing strong teams, fostering collaboration, and creating systems that support both operational excellence and employee growth. With extensive industry experience and a commitment to innovation and process optimization, she has made meaningful contributions throughout her career and helped organizations reach their goals.

Outside of her professional life, Katanya enjoys spending time with her grandchildren and creating artisan items such as soap, lotion, and candles.

Jane Atwood

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Sarah Toma

Extractions & Screening Manager

Sarah Toma is the Extractions and Screening Manager with 12 years of experience in the industry. Throughout her career at USDTL, she has worked across multiple departments, gaining valuable knowledge of the industry as well as a comprehensive understanding of company operations.

Sheryll Marasigan

Client Services Manager

Sheryll Marasigan serves as Client Services Manager, bringing more than 25 years of experience in customer service and organizational leadership. Having grown with the company, taking on a variety of roles and responsibilities that gave her a deep understanding of its operations, she has been instrumental in establishing and developing the Client Services department. Sheryll’s career reflects both personal growth and the evolution of the organization she has helped build.

She leads with a focus on team development, operational efficiency, and exceptional client care, consistently driving improvements across processes, performance, and service delivery. Sheryll is recognized for her collaborative leadership style, strong communication skills, and commitment to delivering high-quality service that supports both client success and organizational growth.

Mario Pasamba

LIMS and Salesforce Manager

A chemist at heart, Mario began his career in the pharmaceuticals industry. During those years on the bench and as a stability study manager, his favorite side hustle had always been performing computer systems validations as an admin for LIMS and other laboratory software applications. Mario took that experience and knowledge to the IT team at USDTL where he could do computer stuff full-time.

Since 2013, Mario has helped grow USDTL over the years by providing countless automations and improvements to workflow processes with an eye on efficiency. A self-professed data guy, he geeks out when given the opportunity to design a new report, develop and implement an API, or deliver data to help drive important business decisions.

Andre Sukta

Research and Development Manager

Andre Sukta is the research and development manager at USDTL, a laboratory specializing in non-traditional matrices. He is currently charged with expanding, improving, and increasing efficiency of the methods used at USDTL. He joined USDTL in early 2013 as our Laboratory Supervisor, bringing more than a decade of forensic toxicology expertise with him.

Andre received his Bachelor of Science degree in Chemistry (Forensics concentration) in 2002 from Benedictine University, Lisle, IL. In 2009, he received his Masters of Science degree in Forensic Science from University of Illinois at Chicago. He has co-authored several peer-reviewed research articles, including papers in the Journal of Analytical Toxicology and Forensic Science International.

In 2002, Andre began his career in toxicology as a Forensic Scientist with the Illinois Racing Board Laboratory. Since then, he has worked with various toxicology groups, including University of Illinois at Chicago – College of Pharmacy, Indiana University – College of Medicine, and the Indiana State Department of Toxicology.

Andre Sukta is a member of the Society of Forensic Toxicologists (SOFT), the American Academy of Forensic Sciences (AAFS), Chicago Chromatography Discussion Group (CCDG), and the Midwest Association of Toxicology and Therapeutic Drug Monitoring (MATT). He has taken on many leadership roles, including serving as a Director for the Society of Forensic Toxicologists, an Executive Board member for the Alcohol, Drugs, and Impairment Division of the National Safety Council. He is also a member and past chair of the Section on Cannabis within the Alcohol, Drug, and Impairment Division of the National Safety Council. He is also cohosting the 2026 Joint Annual Meeting of Society of Forensic Toxicologists (SOFT) and The International Association of Forensic Toxicologists (TIAFT).

Mary Jones

Mass Spectrometry Manager

With 29 years of experience in the field of forensic toxicology, Mary Jones has seen the industry evolve from a field primarily focused on Gas Chromatography Mass Spectrometry to one that is now almost exclusively centered on Liquid Chromatography Tandem Mass Spectrometry.

Mary began her career at CompuChem Laboratories in Research Triangle Park, NC, where she worked in Quality Control, Mass Spectrometry, and Certification. Through mergers and acquisitions, CompuChem became what is known today as LabCorp.

Achieving certification as a Toxicological Chemist through the National Registry of Certified Chemists and maintaining that certification has been a highlight of Mary’s career.

Mary has a passion for the work she does, the people she works with, and the instrumentation in the laboratory. Being able to answer a question, train someone in a new task, or figure out a problem is where she likes to put her talent to use.

Mary likes to watch sports, especially the Detroit Tigers, Cleveland Browns, and Carolina Hurricanes. She enjoys golfing and hopes to get back on the course soon.

Mary’s family is her most important hobby, and doing things with them is very special to her. She also loves her dog, Penny Marie.

Liaqat Ali Abbas

Certification Department Manager

Liaqat Ali Abbas is a senior leader in forensic toxicology with over 30 years of experience in analytical testing, certification, and laboratory oversight. As Head of the Certification Department at United States Drug Testing Laboratories (USDTL), he ensures the integrity and accuracy of forensic drug testing results for healthcare providers, regulatory agencies, and child and family services. Abbas brings deep expertise in GC/MS and LC/MS/MS technologies, team leadership, and regulatory compliance, and frequently provides expert witness testimony in support of forensic findings.

David Farber

Director of Human Resources

David is the Director of Human Resources with over 20 years of experience across multiple industries. He is a relationship-focused, hands-on leader known for implementing best practices that strengthen organizational effectiveness.

David brings deep expertise in recruiting, compensation and benefits, employee relations, and employment law compliance. He is a collaborative communicator who builds credibility and strong relationships across all levels of the organization.

He is passionate about fostering a culture that inspires and motivates employees to support USDTL’s mission of protecting and enriching lives.

David holds a bachelor’s degree in Business Management from Northern Illinois University and maintains HR certifications from SHRM (Society for Human Resource Management) and HRCI (Human Resource Certification Institute).

Priti Soni

IT Director

A dynamic and results-driven IT leader with over 25 years of experience in healthcare technology, infrastructure operations, cybersecurity, and enterprise application management. Priti Soni specializes in optimizing IT strategies to align with business objectives, ensuring secure and scalable solutions for the organization. As a Certified Enterprise Architect and CIO Program graduate, she brings a unique blend of technical acumen and business leadership, enabling her to drive innovation, efficiency, and digital transformation. She thrives on collaborating with executive teams to deliver cutting-edge IT solutions that enhance security, compliance, and operational excellence.

Donna Coy, PhD

Laboratory Director

Donna Coy, PhD, NRCC-TC serves as Laboratory Director at United States Drug Testing Laboratories, where she brings over 14 years of experience in forensic toxicology. A detail-oriented scientist with deep technical expertise, Dr. Coy specializes in alternative biological matrices, including oral fluid, umbilical cord tissue, meconium, hair, and nail, supporting advanced applications in drug testing and toxicological analysis.

In her leadership role, Dr. Coy is responsible for ensuring regulatory compliance and efficient day-to-day operations across the laboratory, collaborating in method development to advance testing capabilities, and providing expert witness testimony in legal and forensic settings. Her work reflects a commitment to scientific rigor, accuracy, and the highest standards of laboratory quality.

Dr. Coy earned her Bachelor of Science in Forensic Science from Eastern Kentucky University and her PhD in Toxicology from the University of Kentucky. She is certified as a Toxicological Chemist by the National Registry of Certified Chemists (NRCC), demonstrating her professional excellence and dedication to the field.

She is an active member of the Society of Forensic Toxicology (SOFT) and the Midwestern Association for Toxicology and Therapeutic Drug Monitoring (MATT). Dr. Coy has also contributed to the advancement of the profession through her leadership within MATT, serving on its board from 2021 to 2024 and as President from 2022 to 2023.

Steve Stange

Vice President Sales & Marketing

Steve Stange is Vice President of Sales & Marketing at United States Drug Testing Laboratory (USDTL), bringing more than three decades of leadership experience across the diagnostics and drug testing industries.

Prior to joining USDTL, Steve served as Senior Vice President at Credence Global Solutions, a leading provider of revenue cycle management services for the clinical laboratory community. Under his leadership, Credence grew from a startup into a $50 million annual revenue organization within five years.

Earlier in his career, Steve was Sales Officer and Vice President at Laboratory Corporation of America (Labcorp), the nation’s largest independent clinical laboratory. In this role, he led significant organic growth initiatives and multiple acquisitions while overseeing a broad portfolio of testing services, including clinical and anatomic pathology, genetics, infectious disease, allergy, toxicology, and oncology.

Steve began his professional career as a Captain in the United States Marine Corps and served with distinction during the First Persian Gulf War.

He holds a Bachelor of Arts degree from Stetson University, with a major in History and a minor in Religious Studies.

Bill Soukup

Chief Financial Officer

Bill Soukup is Chief Financial Officer at United States Drug Testing Laboratory (USDTL), bringing more than 20 years of financial management experience across multiple industries and global companies.

Prior to joining USDTL, Bill served as Vice President of Finance at Sound Physicians, a physician services staffing organization partnering with hospitals nationwide. Prior to that, Bill worked at Duly Health and Care, General Electric and Siemens.

Bill attended Indiana University for his undergrad studies and holds an MBA from the University of Chicago Booth School of Business.

In his personal life, Bill loves the Indiana Hoosiers, the English Premier League, food and cooking. He and his wife Jenny have 4 kids William, Rose, Summer and Benjamin.

Joseph Jones, PhD

Chief Operating Officer and Executive Vice President

Dr. Joseph Jones is the Chief Operating Officer and Executive Vice President for USDTL with more than 25 years of experience in the forensic toxicology industry. Jones has provided expert testimony in a variety of venues throughout the country and appears as an author on over a dozen peer-reviewed scientific articles. Jones is listed by The National Registry of Certified Chemists as a Toxicological Chemist, is a CAP Laboratory Inspector, and is a qualified expert in drug testing in several venues including union arbitration, unemployment hearings, family court, civil court, criminal court and Military courts-martial. In addition, Jones frequently gives workshops, presentations, and webinars.