About Us

A great company is built on a great team. Our careers have been dedicated to advancing dietary and wellness testing designed to deliver personalized insights that help you better understand your body’s unique responses.

Driven by passion and grounded in science, we focus on creating innovative tools that make wellness more personal, accessible, and actionable — empowering you to make informed choices and unlock new levels of well-being.*

500k+

Clients Wordwide

40+

Years Combined Experience

20+

Team Members

4.2+

Online Ratings

Meet Our Founders

Darin & Samantha Upchurch

Darin and Samantha "Sam" Upchurch, are the husband-and-wife team behind Advanced Food Intolerance Labs (AFIL) — united by a shared mission: to help people uncover what’s really going on inside their bodies so they can take control of their health with clarity and confidence.

Together, they built AFIL to bridge the gap between frustration and understanding — combining advanced at-home wellness testing approach, with personalized guidance to help you make smarter choices about what you eat, how you live, and how you support your body every day.*

Our Core Beliefs

The foundation of everything we do is built on core scientific principles — nutrition, digestion, nutrient utilization, and the body’s natural detoxification pathways. We focus on how these systems work together to help maintain balance and support overall wellness, with the goal of optimizing how nutrients are absorbed and how the body processes what it doesn’t need.*

Guiding Principles of Our Methods

A thoughtfully designed approach combining nutrition, lifestyle balance, and supportive nutrients to help your body’s natural processes, promote overall wellness, and encourage sustained well-being.*
Diet

"One person's food is another person's poison."

Over 350 common foods and drinks such as grains, gluten, legumes, seeds, nuts, dairy, seafood, fish meats, eggs, vegetables, fruits, herbs, spices, alternative dairy, oils, and fats.

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Digestion

"Every disease starts in the gut."

We believe that healthy digestion is foundational to overall well-being. Signs like changes in bowel habits, digestive discomfort, or low energy can be indicators that your gut may not be functioning at its best. Paying attention to these signals — and exploring potential contributing factors — can help you make more informed choices to support a balanced digestive system and a healthier, more vibrant life.*

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Imbalance

"An unhealthy state is a tragedy of nutrition."

Even when standard blood labs look “normal,” many people still may not feel their best. This may be because traditional testing often provides a snapshot of what’s circulating in the blood at a single moment — but it doesn’t always reflect how nutrients are being used at a deeper level. Our approach aims to looks beyond the surface and dig deeper to uncover potential patterns that may be influencing how your body functions day to day, giving you a more complete picture of your nutritional landscape.*

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Detox

Our testing provides insight into how your body may be responding to certain environmental exposures — including potential patterns linked to heavy metals or other substances it doesn’t need. These insights can help you better understand where additional support may be beneficial and guide more informed choices about your nutrition and lifestyle.*

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Diet
Digestion
Imbalance
Detox

Our Executive Team

Meet the executive team who work to create individualized Health & Wellness testing and tools to help you achieve your goals, create a life of optimal wellness, and live with passion and purpose.
Samantha Upchurch

Samantha Upchurch

Co-Owner, Founder, CEO

Samantha “Sam” began her work in wellness more than a decade ago, driven by her own health challenges and a deep curiosity about how environment, nutrition, and lifestyle shape human biology. With a background in biochemistry, she immersed herself in the emerging science of epigenetics — exploring how external inputs, such as diet and daily habits, can influence gene expression and overall well-being.That passion grew into a science-driven approach to wellness focused on how the body adapts, responds, and thriveswhen supported in the right way. Before co-founding Advanced Food Intolerance Labs (AFIL) with Darin, Sam worked with other testing providers and co-owned a supplement company — experiences that helped shape the innovative strategies AFIL uses today.As a lifelong entrepreneur, Sam now leads the company’s vision, marketing, technology, and growth. Her mission is to empower people with clarity and confidence on their wellness journey — helping them rediscover hope, direction, and a deeper understanding of their health.

Darin Upchurch

Darin Upchurch

Co-Owner, Founder

Darin brings more than 25 years of experience as a Doctor of Chiropractic, dedicating his career to helping people better understand their bodies and make lifestyle choices that support their health. As an entrepreneur, he founded and operated multiple chiropractic and wellness clinics across the country, where he saw firsthand how nutrition, movement, and environment can influence physical well-being.His passion for uncovering the deeper “why” behind people’s health challenges led to the creation of Advanced Food Intolerance Labs (AFIL), which he co-founded with Samantha. Today, he leads the company’s financial strategy, and long-term growth — all driven by his commitment to empowering people with the clarity they need to make informed decisions about their nutrition and wellness.

Ajith (Aj) Giri

Ajith (Aj) Giri

Chief Technical Officer

Ajith serves as our Chief Technical Officer. He has a deep appreciation and passion for providing an excellent customer experience through efficient and reliable processes tailored to our customers and clients. He is a CRM and Automation Junkie. Ajith holds many Google and Hubspot certifications, is well-versed in operational procedures, and constantly stays on top of technology and customer service trends. Ajith is an avid cricket lover and loves to play in his free time. He has been part of Advanced Food Intolerance Labs since its inception and enjoys providing a service that helps people in their everyday lives overcome health obstacles without the headache of going to the doctor's office.

Alexis Sparks

Alexis Sparks

Senior Coordinator

Alexis strives for excellence in all aspects of client support and customer care while maintaining quality of the services and processes throughout the company. She first got into customer service and system operations working at her first managerial position as a retail manager. This is when she knew that she wanted to serve as a larger purpose that not only challenges her abilities, but also helping people in the process. Alexis has obtained a Bachelor of Arts degree in Interpersonal Communications from the University of Kansas with a concentration in Spanish. She has been with Advanced Food Intolerance Labs since the start of service production - and her favorite aspect of this company is working with a team that has the common goal of providing people with the upmost comprehensive and quality service who continuously strive to innovate and produce the best for our audience.

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Our Panel of Experts

Meet the panelists who provide knowledge and break-through articles and advances in complementary scientific technology and methods.*
Dr. Shola

Dr. Shola

Medical Doctor

Dr. Shola is a medical doctor with a passion for health, wellness, and nutrition, starting her journey at the University of North Texas with a degree in biology and a minor in chemistry and Spanish, later obtaining her degree as a doctor of medicine from Washington University of Health and Science. While there, she successfully implemented and facilitated health and wellness programs for a diverse range of participants in under-served communities with a "hands-on" community outreach and a preventative medicine approach. Dr. Shola uses training and education to proactively manage patient health issues, promoting nutrition and wellness action plans. In 2022, Dr. Shola will also receive her board certification in functional nutrition and lifestyle counseling. After her own experience with unsuccessful hormonal imbalance treatment, she redirected her focus from treating symptoms to addressing the root cause with a functional medicine approach. Dr. Shola's health is now better than ever before, and she has since helped many women to achieve the same. Dr. Shola attributes her success to her faith in God and passion for seeing people achieve optimal health.

Dr. Sony

Dr. Sony

Medical Doctor

Dr. Sony is known for her medical articles, written with in-depth detail and accuracy owing to her vast medical knowledge and thorough research of each article. She completed her degree with multiple scholarships from Guangzhou Medical University and is a board-certified Clinical Doctor. She is currently working as a Medical Officer in the emergency department of a renowned hospital and continues to publish numerous medical papers and articles. Dr. Sony continues to lead the way in medical breakthroughs, unparalleled by her high level of detail, knowledge and passion for discovering new sciences and innovative healthcare treatments.

Dr. Ernest

Dr. Ernest

PhD, Scientist

Dr. Ernest is an experienced biochemical scientist with 15+ years of expertise in research and academia, specializing in genetics, molecular biology, and oncology. He has published 10 peer-reviewed scientific articles, and presented his results in 8 scientific articles and oral communications. As a teacher, he has taught biology, biochemistry and histology courses to medical, and traditional Chinese medical students, wanting to take a holistic approach to patient care. Dr. Ernest is passionate about studying human being in a holistic way, and is currently studying a degree in anthropology and human evolution. His medical, scientific, and holistic approach is a true asset to the technology findings at Advanced Food Intolerance Labs.

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Driven by Energy, Science, and You

We’re passionate about bridging emerging wellness science with innovative technology to deliver accessible, insightful, and easy-to-use at-home testing solutions. Our commitment to innovation, client experience, and meaningful impact is at the heart of everything we do.*

Deeper Insights. Smarter Wellness.

We’re driven to make a meaningful difference in health and wellness. Backed by a team of wellness experts, with decades of experience, we’re pioneering a new way to explore what may be influencing the body functions — going beyond surface-level symptom management.

Our mission is to deliver clarity and deeper understanding, empowering people with information that helps them make more informed decisions about their health and long-term well-being.*

Start your health journey

Start your journey toward better health today by taking the first step to a healthier, happier you.

We are here to serve you

Explore our location on the map and reach out to us for personalized wellness solutions. We’re here to guide you every step of the way.

United States (HQ)

Advanced Food Intolerance Labs 

6316 College BLVD Overland Park, Kansas, USA, 66211

(+1) 913-444-9407