~ Knowledge is a Healthy Thing™ ~

What if curating your diet, lifestyle, and supplements for your unique body could return it to vibrant health?


Do you have health concerns that persist in spite of “trying everything”? Have health providers said your results are normal, but you know something’s off? Do you feel on your own and stuck in a cycle of trial and error? If this sounds familiar, you may benefit from Functional Diagnostic Nutrition® (FDN). Practitioners of FDN are certified health detectives trained to investigate and resolve the root causes of chronic dysfunction.

Learn more below. Then schedule a short, no-obligation discovery call with Jennifer to find out if Functional Diagnostic Nutrition is a good fit for you.

Jennifer Lazar, FDNP
Meet Jennifer

“Hi, I’m Jennifer Lazar. Like many, I struggled for years with health issues no one could explain because my symptoms didn’t fit the definition of any disease. Time and again, I was told everything was ‘normal,’ when I knew it wasn’t. I looked everywhere for answers but soon got lost in a forest of dietary and supplement advice. Nothing worked. Frustrated, I began to believe it was all in my head, that I should just accept reality and live with it. But I kept going, learning to test my body to find out what was really going on and make changes. Bit by bit, I began to see results. Then I found that what I was doing on my own – with the help of some skilled practitioners – was a proven method with a name: Functional Diagnostic Nutrition. I was all in! The results led me to become a certified FDN Practitioner myself, and now I help others. Healing begins with the realization that your body is like no other, a combination of chemistry, microbiome, genetics, habits, and environment that is yours alone. Knowing – not guessing – why it’s not functioning optimally is the first step to feeling better. If you’re ready, I’m here to guide you on that journey.”

What is Functional Diagnostic Nutrition?

Functional Diagnostic Nutrition (FDN) is a holistic, evidence-based approach for investigating and resolving the underlying causes of chronic health problems not associated with disease.

Drawing on data from comprehensive health histories and self-administered, in-home testing kits, certified practitioners (FDNPs) work hand-in-hand with clients over time to uncover internal and external stressors, such as metabolic, hormonal, environmental, immune, digestive, or nervous system issues. They then create individualized, drug-free plans to address them.

FDN protocols typically involve nutritional and behavioral changes in the key areas of diet, rest, exercise, stress reduction, and supplementation. The FDN process takes place over several months, depending on the complexity of a client’s health concerns, during which FDNPs offer coaching, support, and resources. Clients in turn report how their bodies respond, providing valuable feedback in a learning loop that informs and refines their personalized plan.

The FDN motto is “Test. Don’t Guess.”



Functional Nutrition FAQs

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Functional Nutrition:
Packages & Pricing

FIVE-MONTH PACKAGE

Close-up of a green bamboo stalks in a forest.

Essential Balance

$3,250

One-time fee. Plus lab testing and supplement costs.*

~ Package Features ~


✓ Comprehensive Intake
– 80 min.

✓ Metabolic Typing Diet Quiz Analysis

✓ Three (3) Lab Tests:

  • DUTCH Test

  • GI-Map

  • MRT Food Sensitivity Test

We may replace one test above with a Neurotransmitter Test, Mucosal Barrier Assessment, Metabolic Wellness Panel, or Wheat Zoomer.)

Three (3) Test Result Calls – 90 min.

Diet, Lifestyle & Supplement Protocols

15% Off Professional-Grade Supplements

Six (6) Coaching Sessions – 45 min. each

Daily Check-ins via client portal

Meal Ideas, Recipes, and more

One (1) Lab Follow-up, if needed

EIGHT-MONTH PACKAGE

Orderly stacks of bricks at a brickyard.

Complete Balance

$5,200

One-time fee. Plus lab testing and supplement costs.*

~ Package Features ~


✓ Comprehensive Intake Session
– 80 min.

✓ Metabolic Typing Diet Quiz Analysis

✓ FIVE (5) Functional Labs from this list:

  • D.U.T.C.H. Test

  • GI-Map

  • MRT Food Sensitivity Test

  • Neurotransmitter Test

  • Mucosal Barrier Assessment

  • Metabolic Wellness Panel

  • Wheat Zoomer

Five (5) Test Results Calls – 90 min. each

Diet, Lifestyle & Supplement Protocols

20% Off Professional-Grade Supplements

Ten (10) Coaching Sessions – 45 min. each

Daily Check-ins via client portal

Meal Ideas, Recipes, and more

Two (2) Lab Follow-ups, if needed

Need additional support? We’ve got you.

Have you completed one of our FDN packages but want continued health guidance? Jennifer offers a three-month, renewable add-on package.

THREE-MONTH ADD-ON PACKAGE

Ongoing Support

$200 per month for 3 months

Contact Jennifer to request this package.


~ Package Features ~


✓ Two (2) Coaching Sessions per Month
– 45 min. each

Daily Check-ins via client portal

Continued Supplement Discounts at package rate


Additional Costs

At the core of FDN is the principle that every person is biochemically unique. Most clients will undergo a standard set of three to five functional laboratory tests, but we may need to substitute one or more labs for others based on what we discover in your intake session or the symptoms you report. Similarly, each person’s supplements, if needed at all, will vary based on lab results. For this reason, lab fees and supplement costs are not included in the price of service packages.

Planning for Lab Fees
FDN practitioners order lab tests on behalf of clients, who pay lab fees directly to various providers. While we do not set prices for labs, the fees shown here are typical and may be used for budgeting purposes.

Costs for Lab Tests
Test Type Cost
Metabolic Type Diet Quiz $139
D.U.T.C.H. Test $399-$499
GI-Map $389
MRT Food Sensitivity Test $335
Neurotransmitter Test $259
Mucosal Barrier Assessment $164
Metabolic Wellness Panel $164
Wheat Zoomer $239
NotePrices are subject to change without notice.

Did you know?

Lab Testing and Interpretation are now available on an a la carte basis.

Want to order functional labs through Jennifer and receive her analysis of the results and a protocol to help bring you back to vibrant health? Schedule an information call below. Costs for Jennifer’s interpretation are $150 per hour and vary by lab test. Clients are responsible for paying labs fees directly to test providers and for supplement costs.