At-Home Inflammation (CRP) Testing Explained
C-reactive protein, or CRP, is a blood marker of inflammation that some at-home tests measure. It has become popular alongside interest in inflammation and long term health, but it is important to understand what a CRP result can and cannot tell you.
Key takeaways
- CRP rises with inflammation from many causes, so it is nonspecific.
- A high sensitivity version, hs-CRP, is used for cardiovascular risk context.
- A single CRP reading can be skewed by a recent infection or injury.
- Interpret CRP with a clinician alongside your full picture.
What CRP measures
CRP is produced by the liver in response to inflammation anywhere in the body. Because inflammation has many causes, from an infection to an injury to chronic conditions, a raised CRP tells you inflammation is present but not where it is coming from. It is a nonspecific marker.
hs-CRP and heart health
A high sensitivity version, hs-CRP, can detect the low grade inflammation associated with cardiovascular risk, which is why it is sometimes used as part of a broader heart risk assessment. On its own it is one piece of a larger puzzle rather than a verdict.
Reading a CRP result
A single CRP reading can be temporarily elevated by a recent cold, infection, or injury, so timing matters and one high value is not necessarily meaningful. CRP is best interpreted by a clinician alongside your symptoms, history, and other markers, rather than in isolation.
Frequently asked questions
It means inflammation is present somewhere, but CRP is nonspecific and does not tell you the cause. A recent infection or injury can temporarily raise it.
A high sensitivity version used to detect low grade inflammation linked to cardiovascular risk, as one part of a broader assessment.
You can, but interpret it with a clinician alongside your full picture rather than acting on a single reading.
References and Further Reading
How we researched this: Our editorial team reviewed current clinical research and guidance from independent health authorities before writing and reviewing this article. You can verify the science yourself through the sources below.
