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.
Services & Pricing

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.

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

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?
What does the functional medicine consultation cost and what is included?
What is GI-MAP testing and who should consider it?
What does DUTCH hormone testing measure?
How much does lab testing cost?
How does functional medicine pair with weight loss or IV therapy here?
Can I do functional medicine over telehealth if I am not in Powell?
How long before I see results?
Do you treat thyroid, adrenal, or gut issues?
Will my insurance cover functional medicine or testing?
Is the consultation a commitment to ongoing testing or treatment?
Who provides functional medicine care at The Confidence Lab?
Do I need to stop my current medications or supplements?
How do I prepare for my functional medicine consultation?
How do I book a functional medicine consultation?
Functional Medicine Near You in Central Ohio
The Confidence Lab
4038 Powell Rd Powell, OH 43065
(614) 219-9983
Meet Your Providers
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
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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