Functional Medicine in Powell, Ohio

Root-cause care that looks past symptom-masking. We use advanced lab testing to find why you feel off, then build a personalized protocol around the results. Powell-based, with telehealth across Ohio.

4038 Powell Rd, Powell, OH 43065

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27+ Years Medical ExperienceOwner-operated and vested in your journey
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Services & Pricing

Functional Medicine Consultation
Root cause health analysis
Ideal candidates for functional medicine at The Confidence Lab in Powell, Ohio

Ideal Candidates for Functional Medicine

This treatment may be right for you if:

  • Identify root causes of chronic symptoms
  • Optimize hormone levels naturally
  • Address gut health and digestive issues
  • Manage autoimmune conditions holistically
  • Improve energy levels and reduce fatigue
  • Create a personalized supplement protocol
  • Enhance overall wellness beyond standard care
  • Get comprehensive lab work and analysis

Root-Cause Functional Medicine at The Confidence Lab

Functional medicine looks past symptom-masking to find why you feel off.

Testing That Maps the Why

At The Confidence Lab in Powell, Ohio, our board-certified providers use advanced lab testing, GI-MAP stool analysis, DUTCH hormone panels, and targeted bloodwork, to map your symptoms (fatigue, hormonal shifts, gut issues, stubborn weight) to the underlying drivers behind them.

A Protocol, Not a Prescription Pad

From there we build a personalized protocol around your results: peptide therapy, nutrient support, and practical lifestyle change, adjusted as we re-test. It is a different model than a 15-minute primary-care visit, one connected picture of your health rather than one complaint at a time.

In Clinic or Statewide Telehealth

Care is available in our Powell clinic and by secure telehealth to anyone with a valid Ohio address. The Confidence Lab is located at 4038 Powell Rd, Powell, OH 43065; call or text (614) 219-9983 to schedule.

What We Test and Treat

Functional medicine starts with a consultation. Specialty panel pricing is panel-dependent and set during that visit, you get the exact cost before anything is ordered.

Add-On Price What It Does for You
GI-MAP Gut Health Testing Set at consult DNA stool analysis maps your microbiome, pathogens, and digestive markers.
DUTCH Hormone Testing Set at consult Dried-urine panel maps cortisol rhythm and sex hormones across a full day.
Peptide Therapy Set at consult Targeted peptide protocols for recovery, metabolism, and vitality.
Nutrient & IV Support From $59 Pairs with IV Hydration and NAD+ Therapy where your protocol calls for it.

The Science: Root-Cause vs. Symptom Care

Standard panels are built to flag disease, not to explain why an otherwise healthy person feels exhausted, foggy, or off.

Functional medicine lab review at The Confidence Lab in Powell, Ohio

The Gap in Standard Bloodwork

Functional lab testing fills that gap by measuring the systems conventional bloodwork often skips.

Two Tests, One Picture

GI-MAP is a DNA-based stool test that quantifies the bacteria, pathogens, yeast, and digestive markers shaping your gut, the foundation for immunity, mood, and nutrient absorption. The DUTCH panel measures sex hormones and cortisol from dried urine across a full day, showing not just hormone levels but how your body produces and clears them. Together they surface drivers, dysbiosis, cortisol dysregulation, hormone imbalance, that a single morning blood draw cannot see.

From Results to Protocol

Your provider translates those results into a concrete protocol: which nutrients to replace, which peptides may help, what to change in sleep and nutrition, and when to re-test. We frame findings as data for a personalized plan, not diagnoses or guarantees, and we coordinate with your primary care provider where ongoing medical management is needed.

Your Path: What to Expect

Functional medicine results and follow-up at The Confidence Lab

Consultation and history (week 1)

Lab testing and collection (weeks 1-2)

Results review and protocol build (weeks 3-4)

Protocol start and check-ins (ongoing)

Re-test and refine (typically 8-12 weeks)

Before, During, and After Your Protocol

Here is exactly what to expect at each stage of your visit, so you can arrive prepared and know what happens before, during, and after your treatment.

Before

, Gather recent bloodwork or lab results so we do not re-order what you already have.
, Note your main concerns, symptom history, and goals.
, List every medication and supplement you take, with dosages.
, Plan DUTCH collection around a typical week, not a high-stress one.

During

, Your 30-minute consultation reviews your full history and symptoms.
, Your provider recommends which panels (if any) fit your goals and confirms the exact cost before ordering.
, Sample collection is simple: GI-MAP at home, DUTCH dried-urine across a day.
, You leave with a clear, personalized starting protocol.

After

, Your provider reviews results with you and finalizes the protocol.
, Most follow-ups are by telehealth, so you only come to Powell when testing requires it.
, We re-test at 8-12 weeks to confirm the plan is working and refine it.
, Changes build gradually over weeks to months; we set realistic expectations and never promise specific outcomes.

Tips for Best Results

Bring any recent bloodwork to your consultation so we do not re-order what you already have.

DUTCH testing needs a few days of collection; plan it around a typical week, not a high-stress one.

Gut and hormone results often connect; testing both gives a fuller picture than either alone.

Functional protocols work best paired with sleep and nutrition changes, not in place of them.

Telehealth covers most follow-ups, so you only come to Powell when testing requires it.

Re-testing at 8-12 weeks is how we confirm the protocol is working, not guessing.

How It Compares

Feature Functional Medicine Consult Standard 15-Min Visit Supplement-Store Self-Testing
Depth of testing GI-MAP, DUTCH, targeted bloodwork Basic panels only Generic kits, no oversight
Personalization Protocol built around your results One complaint per visit One-size-fits-all
Provider oversight Board-certified FNP, full history Time-limited None
Follow-up & re-testing Re-test at 8-12 weeks to confirm Rarely structured Not included
Telehealth across Ohio Yes Varies N/A
Pricing transparency $199 consult; test cost confirmed up front Co-pay + variable Variable, no guidance

Frequently Asked Questions

What is functional medicine and how is it different from seeing my regular doctor?
Functional medicine looks for the root cause of how you feel rather than only managing symptoms. Where a typical visit might address one complaint at a time, a functional medicine consultation at The Confidence Lab reviews your full health history, symptoms, and lab data together to build one connected picture. It is meant to complement, not replace, your primary care.
What does the functional medicine consultation cost and what is included?
The Functional Medicine Consultation is $199 for a 30-minute appointment. It includes a comprehensive root-cause review of your symptoms and health history, a discussion of testing options such as GI-MAP and DUTCH hormone panels, and a personalized protocol built around your goals. You can book it directly at myconfidencelab.janeapp.com.
What is GI-MAP testing and who should consider it?
GI-MAP is a stool-based panel that maps your gut microbiome, looking for bacterial imbalances, pathogens, and markers of digestive function. It is worth considering if you deal with ongoing bloating, irregular digestion, food sensitivities, or fatigue that does not have a clear explanation. Whether it is right for you is decided during your $199 consultation.
What does DUTCH hormone testing measure?
The DUTCH panel is a dried-urine test that measures sex hormones, cortisol, and how your body processes them over a full day. It helps identify factors behind low energy, mood changes, sleep issues, and weight that is hard to shift. Your provider reviews whether DUTCH testing fits your goals during the consultation.
How much does lab testing cost?
Specialized panels like GI-MAP and DUTCH are priced individually and are set during your consultation, because the right testing depends on your symptoms and goals rather than a one-size-fits-all package. We give you the exact test cost before anything is ordered, so there are no surprises. The $199 consultation is what determines which tests, if any, make sense for you.
How does functional medicine pair with weight loss or IV therapy here?
Functional medicine often works alongside our other services. Root-cause hormone testing can reveal metabolic factors affecting a medical weight loss program, while NAD+ Therapy (from $250) and IV Hydration (from $59) can support energy and recovery as you follow your protocol. Your provider helps you decide what, if anything, to combine.
Can I do functional medicine over telehealth if I am not in Powell?
Yes. Functional medicine consultations are available by secure video visit to anyone with a valid Ohio address, so you do not have to drive to our Powell location. Any recommended lab kits can be shipped to your home, and follow-ups can be virtual or in person, whichever you prefer.
How long before I see results?
It varies. Functional medicine addresses underlying causes, so changes tend to build gradually over weeks to a few months rather than overnight. Your provider sets realistic expectations for your specific protocol during the consultation and adjusts the plan based on how you respond. We do not promise specific outcomes or timelines.
Do you treat thyroid, adrenal, or gut issues?
Functional medicine at The Confidence Lab commonly explores thyroid function, adrenal and cortisol patterns, and gut health, because these systems are often connected to fatigue, weight, mood, and digestion. We assess these areas through history and targeted testing, and we coordinate with your primary care provider where ongoing medical management is needed.
Will my insurance cover functional medicine or testing?
Most insurance plans do not cover functional medicine consultations or specialty panels like GI-MAP and DUTCH, so these are typically out-of-pocket. The consultation is $199, and any test costs are confirmed up front before you commit. We keep pricing transparent so you can plan ahead.
Is the consultation a commitment to ongoing testing or treatment?
No. The $199 consultation is a standalone visit. You leave with a clear understanding of your options and a personalized protocol, but you decide whether to move forward with any testing or follow-up. There is no obligation to purchase additional services.
Who provides functional medicine care at The Confidence Lab?
Care is provided by our co-owners, Anna Castellanos, MSN, APRN, FNP-C and Ashley Williamson, MSN, APRN, FNP-C, both board-certified Family Nurse Practitioners. They bring a combined background in wellness and root-cause care and build each protocol around your individual health picture.
Do I need to stop my current medications or supplements?
No. Bring a complete list of your current medications and supplements to your consultation. Your provider reviews them as part of the full picture and never advises stopping a prescribed medication without coordinating with the provider who prescribed it. Functional medicine is designed to work with your existing care, not against it.
How do I prepare for my functional medicine consultation?
Come ready to talk about your main health concerns, your symptom history, and your goals. It helps to bring any recent lab results, a list of medications and supplements, and notes on sleep, digestion, energy, and stress. The more context you provide, the more targeted your 30-minute consultation can be.
How do I book a functional medicine consultation?
You can book the $199 Functional Medicine Consultation online anytime at myconfidencelab.janeapp.com, or by calling our Powell, Ohio clinic. Choose an in-clinic or telehealth slot, and you are set. Ohio residency is required for telehealth visits and any shipped lab kits.

Functional Medicine Near You in Central Ohio

The Confidence Lab
4038 Powell Rd Powell, OH 43065
(614) 219-9983

View on Google Maps
+ 4038 Powell Rd, Powell, OH 43065; 14-city service area

Meet Your Providers

Anna Castellanos, Co-Owner & Board-Certified Family Nurse Practitioner - The Confidence Lab

Anna Castellanos

Co-Owner & Board-Certified Family Nurse Practitioner

Anna is a board-certified Family Nurse Practitioner and co-owner of The Confidence Lab. Her background in wellness and root-cause care guides each functional medicine protocol she builds.

Ashley Williamson, Co-Owner & Board-Certified Family Nurse Practitioner - The Confidence Lab

Ashley Williamson

Co-Owner & Board-Certified Family Nurse Practitioner

Ashley is a board-certified Family Nurse Practitioner and co-owner of The Confidence Lab. She brings a detail-oriented, whole-person approach to functional medicine and ongoing care.

Services That Pair with Functional Medicine

Functional medicine often works alongside these services at The Confidence Lab.

  • NAD+ Therapy: Cellular-energy infusion that supports protocols targeting fatigue and recovery.
  • IV Hydration & Wellness: Targeted nutrient infusions that reinforce a functional protocol.
  • Medical Weight Loss: Metabolic and hormonal root-cause crossover for stubborn weight.
  • Vitamin Injections: Quick-hit nutrient support between visits (B-12, Glutathione, and more).

Free Resource: The Root-Cause Health Guide

Here is what to expect in this part of your treatment at The Confidence Lab, so you know what happens and why it matters for your results.

Functional Medicine Guide

Root-cause wellness explained -- what to expect from your first functional medicine consultation.

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