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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

Jennifer Hobbs
Laboratory Director
Jennifer Hobbs

Jennifer Hobbs is the Laboratory Director at Greenleaf Labs. She has over 10 years of laboratory experience. Jennifer Hobbs has developed a wealth of experience and knowledge in cannabis testing and experiments from sampling and experimental design, sample processing, and analysis, all the way through interpretation and application of findings. She is responsible for method development, optimization, validation and troubleshooting on Liquid-Chromatography-Mass Spectrometry (LC-MS), Gas Chromatography-Mass Spectrometry (GC-MS), Inductively Coupled Plasma Mass Spectrometry (ICP-MS), and Ultra High-Performance Liquid Chromatography (HPLC). Other fields of expertise include product testing experimental design and analysis, quality assurance system implementation and laboratory accreditation, development and implementation of laboratory information management systems, among others.

Chris Dooly
Managing Partner
Chris Dooly
Crystal Harger
Administrative Assistant
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.

Taegan Loggains
Administrative Assistant
Taegan Loggains
Joseph Reynolds
Assistant Laboratory Director
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.

Devin Thompson
Laboratory Assistant
Devin Thompson
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.

Kayla Adams
Laboratory Assistant
Kayla Adams

Kayla has 3 years experience in the cannabis industry. Before joining the team at Greenleaf Labs, she was the logistics manager for a cannabis grower and has worked in a dispensary. Kayla was born and raised locally in Poteau. She enjoys spending her free time with friends and family, and taking her dog on walks. She is one of our Sample Intake Specialist’s. Kayla is ready to answer any questions our clients may have and ensure that they have a positive experience.

Abbey Jarrard
Laboratory Analyst
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.

Hannah McGowin
Laboratory Analyst
Hannah McGowin
Kalya Davila
Laboratory Assistant
Kalya Davila
Grant Thompson
Transport
Grant Thompson
Jerrett Demory
Transport
Jerrett Demory
James Melson
Transport
James Melson
Brennan Dooly
Brennan Dooly
Chris James
Chris James
Christopher Daniels
Christopher Daniels
Colby Nelson
Colby Nelson
Taylor Sharp
Taylor Sharp
Shawna Bennett
Shawna Bennett
Roulette Massey
Roulette Massey
Jordan Newnam
Jordan Newnam
Dallas Willet
Dallas Willet