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About Us

Who We Are

At Greenleaf Labs, we strive to re-define the relationship between growers, laboratories, and consumers of medical marijuana. By investing in industry-leading technologies and experienced personnel, our laboratory delivers rapid, accurate, and consistent results with complete transparency. Our combination of customer service and scientific innovation simultaneously promotes consumer safety and client growth. Through customizable and flexible support, our partnership is geared towards your success.

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Meet Our Team

Roulette Massey
Lab Director
Roulette Massey
Abbey Jarrard
Assistant Laboratory Director
Abbey Jarrard

Abbey grew up in Paris, AR. She attended college at University of Arkansas-Fort Smith where she received her bachelor’s degree in Biology. From there, she attended University of Arkansas for Medical Sciences where she received a bachelor’s degree in Medical Laboratory Science. She has been working in a clinical laboratory setting for the past 5 years, the past 2.5 years in Microbiology. She is just getting her feet wet in the cannabis industry but is excited and eager to learn all about it.

In her free time she enjoys spending time with her husband and son, reading, and watching New Girl and Schitt’s Creek re-runs.

Chris Dooly
Managing Partner
Chris Dooly
Brennan Dooly
COO
Brennan Dooly
Crystal Harger
Administrative Supervisor
Crystal Harger

Crystal will be the first person you will meet as you begin your partnership with Greenleaf Labs, she will help determine (or guide you to) what services you need with a helping perspective, and a friendly manner.

Joseph Reynolds
Laboratory Analyst
Joseph Reynolds

Joe was born and raised on a small farm in Camden, AR. He attended Arkansas Tech University in Russellville, AR, where he met his wife; and graduated in 2002 with a Bachelor of Science in Agriculture Business. He moved to Fort Smith, AR in 2003 and began his adventure in field of laboratory Sciences. He worked for OK Foods for 7 years with an emphasis in Serology and Microbiology, next he spent a brief period at Pfizer specializing in virology and sanitation, he then spent the next 10 years at Tyson foods furthering his knowledge in Microbiology and even becoming a manager in the lab for 3 years while also becoming a novice in certain chemical analysis before leaving Tyson to work closer to home and raise a child. Joe entered the cannabis field in August of 2020 as a Microbiology analyst. He continued to hone his skill as a Microbiologist and started expanding his knowledge in Chemical analysis. In April of 2021 Joe began working for Greenleaf labs in Poteau, OK and has brought years knowledge and leadership to our laboratory.

Andrew Cargill
Laboratory Analyst
Andrew Cargill

Andrew is from Van Buren, a small town adjacent to Fort Smith, Arkansas. He graduated with a BS in Biology at the University of Arkansas in Fort Smith in 2018.

Since then, he has accumulated 4 years of laboratory experience specializing in quality control. Beginning at Pernod Ricard in Fort Smith, he analyzed alcoholic samples to ensure quality products to customers. If you’re a fan of Jameson, Kahlua, or Seagram’s products, rest assured knowing he tested these products – start to finish.

From there, he dove into the cannabis industry in early 2021. He served as a Quality/Safety Control Director in a cannabis lab for a year before opening his own consulting business. He focused on aiding labs in set-up, development and research.

He now joins us at GreenLeaf Labs – testing your samples for potency and pesticides to ensure safe consumption.

George Driever
Laboratory Analyst
George Driever

Educational degrees include a B.S. in Biology with a Chemistry Minor, an M.S. in Botany with an emphasis in Horticulture, and a Ph.D. in Plant Pathology with a focus in fungal plant diseases. Graduate research was centered on the development a weather driven model to control Pecan Scab in commercial pecan orchards in Oklahoma. The Pecan Scab Model operates on the Oklahoma Mesonet weather system during the growing season.

Postdoctoral research was conducted at the Kearney Agricultural Center near Parlier, CA through the U.C. Riverside Campus. My work there was to develop a similar model to predict a fungal disease on Pistachio in the Central Valley. Later, I managed a research lab for Dr. Adaskaveg where we tested Novel (unregistered fungicides) on stone fruit trees and fruit. We also tested samples of Navel oranges for a fungal disease on lots of fruit being shipped to Korea. Disease lesions from the fruit were tested with both agar plating and PCR methods. Results were sent to the USDA.

My personal interests are many, but my favorites are gardening (traditional and hoophouse) and caring for a small orchard. I enjoy spending time with my family and cooking.

Hannah McGowin
Laboratory Analyst
Hannah McGowin
Taegan Loggains
Laboratory Assistant
Taegan Loggains
Devin Thompson
Laboratory Assistant
Devin Thompson
Kalya Davila
Laboratory Assistant
Kalya Davila
Jerrett Demory
Laboratory Assistant
Jerrett Demory
Christopher Daniels
Laboratory Analyst
Christopher Daniels
Colby Nelson
Laboratory Assistant
Colby Nelson
Taylor Sharp
Laboratory Assistant
Taylor Sharp
Shawna Bennett
Laboratory Assistant
Shawna Bennett
Jordan Newnam
Laboratory Assistant
Jordan Newnam
Grant Thompson
Transport
Grant Thompson
James Melson
Transport
James Melson
Chris James
Transport
Chris James
Dallas Willet
Transport
Dallas Willet