4.8 Stars (Thousands of Happy Users)

COR At-Home Inflammation Test (5-Pack)

$79.00

See your inflammation in 30 minutes — no lab, no mailing in.

5-Test Pack — $79

  • Includes 5 inflammation tests
  • COR One reader device required (available for $199 at checkout)
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Order Your COR Inflammation Test Today

OR Get the COR One FREE TO USE during an active membership. Click Here

Mail-In Kits Are Outdated

COR gives you results in minutes, not weeks.

Most “at-home inflammation tests” aren’t really at home — they’re mail-in kits. You prick your finger, ship your blood, and wait days or weeks for results. By then, the number is outdated.

The COR Inflammation Test measures your erythrocyte sedimentation rate (ESR, or sed rate) — a trusted hospital inflammation marker — and delivers lab-validated results in just 30 minutes, at home.

A Marker That Actually Matters

ESR is a composite marker reflecting dozens of inflammation proteins and is trusted worldwide.

Comprehensive

ESR reflects dozens of inflammatory proteins (CRP, fibrinogen, complement, immunoglobulins)

Trusted in hospitals

ESR is used worldwide to monitor inflammation trends

Longevity insight

Lower sed rates are associated with healthier aging and vitality

Lab quality

But made easy for home use by Apple Watch architect Bob Messerschmidt

Rated 4.8 by 1000+ Happy Users

What You’ll Get With The COR Test

  • Speed: Results in minutes, not weeks
  • Repeatability: Track weekly or monthly to see real changes
  • Transparency: Clear reporting, no black-box algorithms
  • Affordability: As low as $15 per test with 5-packs
  • Accuracy: Validated against hospital reference labs
  • Family Mode: Every plan supports multiple household members, each with their own profile — everyone can follow their own trends, add notes, and tag lifestyle factors privately

A Simple 4-Step Process

From finger stick to result in 30 minutes.

1

Place a drop of blood in the COR test tube

2

Insert it into the COR One reader

3

Get your ESR result in 30 minutes

4

Track trends and add tags in your secure COR Dashboard — including separate Family Mode profiles for each household member

Rated 4.8 by 1000+ Happy Users

Built for Accuracy and Trust

  • FDA Class I registered medical device
  • Validated against hospital ESR methods
  • Built under a full quality management system

See Your Inflammation Clearly

Fast, repeatable results — finally, an at-home test that keeps up with you.

Mail-in kits give you delayed, one-off snapshots. COR delivers faster, repeatable, and transparent results — so you can see your body’s inflammation clearly and follow real trends over time.

Order Your COR Inflammation Test Today

Rated 4.8 by 1000+ Happy Users

Inflammation tracking must become available to everyone, at a consumer price and in a test anywhere format.

Bob Messerschmidt

Founder, Apple Watch Architect

Hear from Thousands Who Have Already Benefited from COR One™

Rated 4.8 by 1000+ Happy Users

Excellent followup when I needed an update on my order and when I had questions.Thank you Bob!

MT
M.T

I've had COR for about 6 months and it's been such a useful health tool! The fact that I can measure a clinically validated inflammation marker at home is great, but the best part is being able to tag readings with what I ate or did on that particular day and seeing what impact that has - so much better than blindly guessing what works for me and what doesn't.

EM
E.M.

Received COR in January of this year. If you care or are concerned about your health, knowing whether you have any inflammation is a great place to start. The device is easy to set up and use with detailed written instructions and helpful videos.The lancets, included are great. The tests work perfectly as well. Just remember to prep your finger to get the best blood flow into the tube. But what has impressed me the most has been the customer support. Any issues I encountered or any questions I had were answered very quickly. And at times, with more detail than expected which was extremely helpful. Kudos to the entire COR Health team.

GG
G.G.

COR completely changed the way I think about inflammation. But MUCH more importantly, it has changed the way I respond to it by providing reliable, near-real-time feedback to dietary and lifestyle choices. This is literally a 'game changer'. My deepest gratitude to Bob and everyone at COR Health, Inc.

RR
R.R.

Very easy to use. App is straight forward and connection is also easy.

TE
T.E.

ESR is the dipstick of health

DA
D.A.

I believe you're in a very unique focus. The public health cost of undetected inflammation is enormous. 

SR
S.R.

I've had COR for about 6 months and it's been such a useful health test! The fact that I can measure a clinically validated inflammation marker at home is great, but the best part is being able to tag readings with what I ate or did on that particular day and seeing what impact that has - so much better than blindly guessing what works for me and what doesn't.

EM
E.M.

Get clear, actionable data about your inflammation.

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Frequently
asked questions

Have any questions? We have the answers.

What does this measure?
 

Sed Rate—short for Erythrocyte Sedimentation Rate (ESR)—is a composite signal of systemic inflammation. It reflects how quickly red blood cells (RBCs) settle to the bottom of a test tube, a process that accelerates in the presence of inflammatory proteins.

Do other home devices exist to measure chronic inflammation?
 

COR is the first and only completely at-home solution.

How is ESR different from CRP?
 

CRP is one inflammatory marker. ESR reflects many inflammatory proteins including CRP—making it better at capturing ongoing or chronic inflammation that CRP alone might miss.

Do you have a CRP tracker as well?
 

ESR is the best marker for tracking because it captures the full picture — it responds to dozens of different acute-phase proteins, stays stable enough to show real trends, and reflects both acute and low-grade inflammation. ESR at home is the gold standard for seeing whether your inflammation is truly moving in the right direction.

What is a normal Sed Rate?
 

It depends on your age and sex, but in general: lower is better. Even within the “normal” range, lower values correlate with better long-term health outcomes. Many of our users aim to be "optimal" with ESR in the 5-7 range or less.

Are COR ESR results as accurate as lab results?
 

Probably more so because ESR is optimally measured within 4 hours of blood draw. The COR device and test are both medically accurate and FDA registered.

Is COR available internationally?
 

COR is currently available in the US and Canada. As with all products COR is subject to local regulation and requirements.

Can I share the results with my physician?
 

Yes. Your physician will understand your Erythrocyte Sedimentation Rate (ESR) results. Additionally, the COR dashboard allows you to print your results. You can then share them with medical professionals.

Is COR covered by insurance?
 

According to the Internal Revenue Service, Class 1 medical devices qualify for inclusion in Flexible Spending Accounts and Health Savings Accounts (FSA/HSA) under Internal Revenue Code Section 213(d). COR is coded as a health care product and may be purchased with your FSA or HSA credit card. Use the Flex option at checkout.

  • FDA Class 1
  • Results In 30 Mins
  • User-Friendly App
FDA Class 1
Results In 30 Mins
User-Friendly App