Fatigue Testing & Evaluation
Persistent fatigue usually has identifiable drivers — they are just rarely tested for. At Wilmington Functional Medicine we choose targeted testing for your specific clinical picture, so your plan is built on data instead of trial and error.
The Right Tests for the Right Clinical Picture
Most people who find us have already had bloodwork done. They were told everything looks normal, maybe handed a suggestion to sleep more, and left just as exhausted as before. The gap usually is not a mystery illness. It is that a routine checkup measures only a fraction of the systems that control how your body makes and uses energy.
Our evaluation starts with your story: when the fatigue began, what makes it better or worse, what was happening around that time — an illness, a stretch of intense stress, a hormonal transition — and which symptoms travel with it. That clinical picture determines which of our six testing tools are worth running. Not every test is for every patient. The goal is the right tests for the right clinical picture, not everything for everyone.
That evaluation is structured, not scattershot. We review any testing you have already had, so nothing useful gets repeated, and we rank what is most likely driving your symptoms before a single new lab is ordered. The difference is obvious: instead of a stack of unexplained numbers, you get findings that connect directly to how you feel.
Our Fatigue Testing Panel
Comprehensive Blood Testing
Iron studies including ferritin and binding capacity, a complete thyroid workup with antibodies when appropriate, Lyme antibody and EBV markers, CBC, and key metabolic markers.
Organic Acids Test (OAT)
A urine test that maps mitochondrial function, B-vitamin gaps, yeast and bacterial overgrowth, detox and oxidative stress markers, and hypometabolic patterns.
Adrenal Stress Profile
Cortisol measured at multiple points across the day to reveal flat, low, or spiking patterns — often used for non-menopausal women with hormone-related fatigue.
Stool & Gut Health Testing
Screens for H. pylori and other gut contributors, and evaluates digestion, absorption, and gut-driven inflammation that can quietly drain energy.
Spirometry
A simple breathing test of lung capacity and airflow that clarifies whether oxygen delivery is limiting your stamina.
EKG
A quick, non-invasive look at heart rhythm and electrical activity when fatigue comes with low stamina, shortness of breath, or chest sensations.
Ready for Real Answers About Your Fatigue?
Book a free 15-minute discovery call. No cost, no obligation — just a straight conversation about your symptoms and whether root-cause testing is right for you. Available in Wilmington, NC or remotely across North Carolina.
What We Are Looking For
Every tool in the panel maps to specific, identifiable contributors to low energy. Depending on your history and symptoms, evaluation may uncover:
- Thyroid dysfunction — one of the most common and most missed fatigue causes
- Iron deficiency and anemia — oxygen delivery problems that drain energy fast
- Lyme disease and Epstein-Barr virus — infections that keep the immune system running
- Cortisol and adrenal patterns — stress-related hormonal exhaustion
- Hormone imbalances — estrogen, progesterone, and testosterone shifts
- Hypometabolic patterns — cellular energy problems that hide on standard labs
- Gut contributors, including H. pylori and its effect on nutrient absorption
You can dig into each driver on our conditions pages, or start with a plain-language overview of why you might be tired all the time.
How Testing Fits Into Your Care
Testing is a tool, not the whole visit. Your results are reviewed with you in plain language, connected back to your symptoms, and turned into a prioritized plan. You can see the full sequence — discovery call, evaluation, testing, and results review — on the how it works page.
Too tired to travel? Much of this panel can be set up as fatigue testing by mail across North Carolina: kits shipped to your door, blood drawn at a lab near you, and results reviewed with our team remotely. See remote testing.