Measure Your Inflammation At Home with the COR One™
FDA-Registered
FSA & HSA Eligible
Medical-Grade
How it works
The COR One™ measures your Erythrocyte Sedimentation Rate (ESR) — the medical standard for tracking inflammation for decades. Unlike CRP, which measures a single inflammatory marker, ESR reflects the combined effect of dozens of inflammation-related proteins, giving you a more complete view of your body’s inflammation.
Test at home with a single drop of blood. Results in 30 minutes. Designed by Apple Watch architect Bob Messerschmidt.
What’s included
COR One™ Device — Wi-Fi inflammation reader. Included FREE with your active membership. Ship it back when you cancel.
Sample Station + USB-C cable — painless blood collection, compact, portable.
Test Tubes — shipped as needed — test up to 5x per month. We track your usage and automatically ship more tubes when you’re running low.
Family Mode — multiple profiles on one device. The 5-test/month cap is per device, not per person.
Cancel any time — ship the device back.
Warranty
Lifetime device warranty. Email hi@corhealth.com and we’ll replace it.
“I love my device. It's incredibly helpful to see how different foods, supplements, and dietary restrictions affect my inflammation levels. Tests at home in 30 minutes.”
AS SEEN IN
Inflammation in three simple steps.
From finger prick to dashboard in under 30 minutes.
Quick Blood Sample
One tiny drop from a gentle finger prick.
30-Minute Result
Your device processes the sample and sends results to your phone.
Track Progress
See what diet, supplements, and lifestyle do to your inflammation over time.
Get clear, actionable data about your inflammation.
Get Mine NowOne inflammation test tells you where you are. Three tell you what’s working.
Mail-in tests like Function and Superpower give you a snapshot every six months. COR gives you a trend — because the device lives on your kitchen counter, not at a lab three states away. Test up to 5x/month and watch your inflammation respond to what you actually change.
Set a baseline. Change one thing — diet, supplement, sleep, stress. Watch your ESR respond. That’s the loop.
This is a fantastic tool for tracking your inflammation. You can measure it at home instead of going to a clinic and waiting a week for the results. You can measure it weekly, and for that week you do one experiment, such as adding an anti-inflammatory supplement to your daily routine. After a week you can see a result. Did it improve your inflammation or not?
Why COR is different
Mail-in tests give you a snapshot. COR gives you a trend.
Mail-in figures based on publicly available pricing and turnaround times as of 2026.
Robert Lufkin, MD
Physician & Medical School Professor, UCLA / USC
New York Times bestselling author empowering people to take back their metabolic health with lifestyle and other tools. Veteran of the Today Show, USA Today, and regular contributor to FOX and other network news stations, with a weekly video podcast reaching over 700,000 people.
Doctors aren’t the ones who make us healthy. Most are too busy managing disease. True health is a choice we must make for ourselves.
What’s in the kit
The COR One™ Device (Included)
Wi-Fi inflammation reader. 30-minute results. Yours to use while you’re a member.
Smart Sample Station
Painless finger prick. Compact, portable.
Test Tubes — As Needed
Test up to 5x/month. Tubes auto-shipped when you’re running low.
Inflammation Dashboard
Your ESR trend in one web app.
Get clear, actionable data about your inflammation.
Get Mine NowLess than a lab — every test
Lab ESR test: $40–$100. With COR: covered by your membership.
Painless. One drop. Done.
Same gentle finger prick diabetics use.
ESR is the best inflammation marker
CRP is one marker. ESR reflects dozens more inflammatory pathways. The medical standard for decades.
Hear from members
Get clear, actionable data about your inflammation.
Get Mine Now
Frequently asked questions
How does the COR One™ measure inflammation?
The device measures your Erythrocyte Sedimentation Rate (ESR) — a key marker doctors have trusted for decades. It tracks how quickly red blood cells settle in your blood sample, which changes when inflammation is present. Our FDA-registered device brings this lab-standard test into your home.
What makes COR One™ different from typical lab tests?
Traditional inflammation testing means scheduling appointments, traveling to labs, and waiting days for results. COR One™ lets you test anytime at home and see your results in 30 minutes. This frequent testing helps you spot patterns and see how your daily choices affect your body.
How accurate are the results?
The COR One™ provides medical-grade ESR measurements — the same test labs use. We’ve matched our results against standard lab tests to ensure accuracy. That’s why we’re FDA-registered and trusted by healthcare providers.
How often should I measure?
It’s up to you. When you start, we recommend testing weekly for a month to establish your baseline and spot patterns. After that:
- General tracking: weekly or monthly
- Food sensitivity: after trying new foods or during elimination diets
- Managing a condition: as often as needed to track progress
- Fitness optimization: before and after changing routines
How is ESR different from CRP?
CRP is a single inflammatory marker. ESR reflects the combined effect of multiple inflammation-related proteins, which makes it especially useful for tracking longer-term, whole-body inflammation trends over time.
What is a normal ESR?
ESR varies with age and sex. In general, lower is better — but the most useful thing is your personal baseline and whether your trend is improving. COR helps you track toward an optimal range, not just staying ‘normal.’
Can I share my data with my doctor?
Absolutely. The COR dashboard creates clear reports of your ESR results that any doctor will understand. Many users bring their tracking data to appointments, showing how their inflammation levels change between visits.
Is the device really free?
Yes — for a limited time. The COR One device ships free with your active membership. Cancel any time — just ship the device back to us at your expense.
How does the 5 tests/month work?
Test up to 5 times per month — your membership covers it. We track your usage and automatically ship more tubes when you’re running low.
Can I cancel any time?
Yes. Just ship the device back to us at your expense.
FSA/HSA eligible?
Yes. The COR One™ and test tubes qualify under IRS Section 213(d). Use your FSA or HSA card at checkout, or email support@corhealth.com for a dedicated payment link.
Already own a COR device (non-subscription) and need to buy testing supplies?
Yes — head to the COR Mini Test Tubes purchase page. Pick a pack size (5, 10, 25, or 50) and check out. No membership required.
— For current members —
The questions below cover the most common things existing members ask. New visitors can skip ahead.
I'm a member. Where do I sign in?
Sign in at corhealth.com/account. There you can see your active membership, update your shipping address or payment method, and view past orders. If you have trouble signing in, email support@corhealth.com and we'll get you sorted.
How do I order more test tubes between auto-shipments?
Buy tubes directly on the COR Add-Ons page. If you've run out before your next auto-shipment is scheduled, email support@corhealth.com and we'll get tubes out to you the same business day.
What else does COR Health sell?
We sell the COR One Membership plus replacement test tubes, storage cases, and COR Care — all in one place on the COR Add-Ons page. We don't sell supplements. Separately, the Anti-Inflammatory Suite is a free educational resource where we summarize the scientific evidence behind foods, supplements, and lifestyle practices that may help support healthy inflammation levels.
How do I manage, pause, or cancel my membership?
Sign in at corhealth.com/account to view and manage your membership. To pause or cancel, email support@corhealth.com — we'll send a return authorization. Receipt of the COR One device at our facility ends your membership and stops all further charges.