Clinical-precision metabolic testing that ends the guesswork. Get the data your body has been hiding — then build a protocol around your exact biology.
Know your true resting burn rate. Stop guessing at calories.
VO₂ Max testing reveals your ceiling — and how to raise it.
Cellular oxygen efficiency predicts long-term health.
Whether you want to lose weight, crush your next race, or add healthy years — precision data changes everything.
Metabolic slowdown is the #1 reason diets fail. Know your true resting burn rate and stop guessing at calories.
VO₂ Max testing reveals your exact ceiling — and the precise plan to raise it.
Cellular oxygen efficiency is the strongest single predictor of long-term health.
Nine biomarkers. One session. A complete picture of your health, performance, and longevity potential.
Your true resting metabolic rate and caloric needs.
Peak oxygen uptake — the gold standard of cardiovascular fitness.
Precise fuel-source ratios at every intensity level.
Mitochondrial efficiency and oxygen utilization.
Cardiopulmonary capacity under load.
How old your body actually is — independent of your birth year.
Personalized heart rate zones for every workout.
Lung capacity and movement efficiency.
Brain-body oxygen linkage and cognitive performance.
Every test delivers a complete program — nutrition, training, and expert analysis.
A program tailored to your calorie, macronutrient, and micronutrient requirements.
Training based on your limitations, tailored to any equipment or program.
A deep dive into your metabolic, lung, and heart fitness with an expert.
Pay first, then schedule. Your spot is locked before you walk through the door.
Select the protocol that matches your goal. Pay a $50 deposit to lock in your spot.
After payment you're redirected straight to our Calendly. Pick your date — no back-and-forth.
Your data is analyzed into a personalized training and nutrition protocol built for your exact biology.
Reserve with a $50 deposit. After payment, you're automatically redirected to book your appointment.
What happens when two women are brought together for the common goal of helping individuals gain knowledge and tangible tools to accomplish their health goals? Precision Longevity Labs is created — the partnership of Kerry Thuett Ph.D., FNTP, SF1/2, SFL, CPT, CF1, PN1 and Jessica Spann BA, LMT, two ladies with varying backgrounds and a common goal.
Kerry owns Fully Fueled Fitness, LLC, the location of our testing. Dr. Thuett has a Ph.D. in neurotoxicology and is a functional nutritional therapy practitioner and strength and conditioning coach. She has 40 years of teaching experience. She personally lost 180 lbs while increasing muscle by 33% using fat loss and fitness techniques that she developed. Her goal is to help others learn to use food, focused supplementation, and strength and conditioning to activate the innate healing capacity of the body.
Jessica owns Hidden Healing: Salt, Light and More LLC where she has been a massage therapist for 25 years, with a background in kinesiology and nutrition. Jessica has a history of chronic disease herself and understands the value of focused testing to help a client achieve the best results. She has seen how the right macro balance partnered with focused strength training has allowed her to feel better now than she has in a long time.
These ladies would love to partner with you to help you achieve your God-given potential!
Eight biomarkers converge to calculate your true biological age — and your roadmap to improving it.
The PNOĒ Precision App turns your test results into a living nutrition and training system.
Registered dietitians analyze your metabolic profile, dietary preferences, and restrictions to craft a plan that works for your biology.
Automatically swap meals for alternatives that align with your preferences and get guidance on portion sizes and meal timing.
Access thousands of healthy recipes covering every diet type — keto, vegan, vegetarian — with detailed cooking instructions.
Log meals with the slide of a button or import from any third-party food tracker automatically. No friction, no excuses.
Every protocol is grounded in data, not intuition.
Metabolic testing uses breath analysis to measure how your body converts oxygen into energy. It reveals your exact calorie burn, fat-vs-carb fuel usage, VO₂ Max, and cellular efficiency — data that’s impossible to get from wearables or calculators.
An RMR test takes about 15 minutes. A VO₂ Max test runs 15–20 minutes. If you book the combined RMR + VO₂ Max, plan for roughly 45 minutes total including setup and consultation.
For the RMR test, fast for 4–5 hours beforehand and avoid intense exercise for 24 hours. For the VO₂ Max test, come hydrated and ready to exercise — bring comfortable workout clothes and shoes.
We use the PNOĒ metabolic analyzer — a clinical-grade device used in hospitals and research labs worldwide. It measures breath-by-breath gas exchange with medical precision.
Pay a $50 non-refundable deposit through Stripe to reserve your spot. After payment, you’re automatically redirected to Calendly to pick your date and time. The remaining balance is due after your testing session.
You receive a detailed lab report, a personalized nutrition and/or training plan (depending on your package), access to the PNOĒ Precision App, and a one-on-one consultation to walk through your results and program.
Clinical-precision testing, expert guidance, and a program built entirely around your biology.