๐ฉบ Medically Reviewed by: Edward Salko, D.O. |
๐งช Lab Partner: Labcorp
The High-Sensitivity C-Reactive Protein (hsCRP) blood test measures low levels of CRP โ a protein released by the liver in response to inflammation โ with enough precision to assess cardiovascular risk. Unlike the standard CRP test which detects acute inflammation from infections and injuries, the high-sensitivity version detects the chronic low-grade arterial inflammation that silently increases heart attack and stroke risk over years. The American Heart Association recommends hsCRP testing for patients at intermediate cardiovascular risk. It is one of the most important cardiac risk markers available โ and one of the least ordered in routine physicals. You can order it here without a doctor’s visit, referral, or insurance approval.\
How to Interpret Your hs-CRP Result โ The Cardiovascular
Inflammation Scale
The American Heart Association uses this risk scale for hsCRP in
cardiovascular assessment:
| hsCRP Level | Cardiovascular Risk | What It Means |
|—|—|—|
| Below 1.0 mg/L | Low | Low arterial inflammation risk |
| 1.0 โ 3.0 mg/L | Average | Moderate cardiovascular risk |
| Above 3.0 mg/L | High | Significant cardiovascular risk |
| Above 10 mg/L | Very High | Likely acute infection or injury โ retest |
Important: A single hsCRP reading above 10 mg/L usually indicates
acute infection or injury rather than chronic cardiovascular
inflammation. If your result is above 10 mg/L, wait 2-3 weeks and
retest once any illness has resolved.
Why hsCRP Catches Heart Risk That Cholesterol Misses
Up to 50% of all heart attacks occur in people with normal
cholesterol levels. hsCRP explains why. Chronic arterial
inflammation โ even at levels too low to cause symptoms โ damages
the inner lining of blood vessels, promotes plaque formation, and
increases the likelihood of plaque rupture, which is the immediate
cause of most heart attacks.
The JUPITER trial, one of the landmark cardiovascular studies,
found that people with normal LDL but elevated hsCRP had
significantly reduced heart attack and stroke rates when
inflammation was treated โ confirming that hsCRP is an independent,
actionable cardiovascular risk marker, not just a bystander.
For the most complete cardiovascular risk picture, hsCRP should
be interpreted alongside your Lipid Panel and Homocysteine results
โ not in isolation.
Reviewed by Edward Salko, D.O., Medical Director, Personalabs
Sources: American Heart Association (2023); JUPITER Trial โ
New England Journal of Medicine (2008); Labcorp Test Directory (2025).
C-reactive protein is used as an indicator for a wide range of disorders like inflammatory disease, autoimmune disorders, and chronic infections. It is interpreted in conjunction with other markers or tests, never alone.
The measurement of C-reactive protein(CRP), High Sensitivity may add to the predictive value of other markers used to assess the risk of cardiovascular and peripheral vascular disease.
Increases in CRP values are nonspecific. CRP is an indicator for a wide range of disease processes and should not be interpreted without a complete clinical history. Recent medical events resulting in tissue injury, infections, or inflammation, which may cause elevated CRP levels, should also be considered when interpreting results. Serial analysis of CRP should not be used to monitor the effects of treatment.
Recommended For:
Evaluating acute and chronic inflammatory diseases, monitoring therapy.
Special Notes:
No special preparation is necessary prior to blood sample collection.
Tests Included:
Estimated Turn Around For Results:
2-10 Business Days
For an exact turnaround time for results, please contact us at Personalabs and we will contact the lab on your behalf as turnaround times vary depending on testing location or lab testing provider.
