High-Sensitivity CRP (hs-CRP)
High-sensitivity C-reactive protein (hs-CRP) measures low-grade inflammation levels to assess cardiovascular disease risk and identify inflammatory conditions.
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What this test measures
High-sensitivity C-reactive protein (hs-CRP) is a blood marker that measures a protein produced by the liver in response to inflammation in the body. The high-sensitivity version can detect very low levels of CRP (as low as 0.6 mg/dL), making it particularly useful for assessing cardiovascular disease risk rather than diagnosing acute infections.
hs-CRP serves as an important predictor of cardiovascular events, including heart attacks, strokes, peripheral vascular disease, and sudden cardiac death in individuals without a history of heart disease. Research has shown that hs-CRP testing adds predictive value beyond traditional risk factors like cholesterol levels, and may actually be a stronger overall predictor of heart disease and stroke than LDL cholesterol. Studies indicate that elevated CRP levels, measured through hs-CRP testing, can serve as a marker of atherosclerosis, helping healthcare providers identify individuals who may benefit from preventive interventions.
Who should consider this test
You might consider this test if you are experiencing any of the following:
- Individuals with intermediate cardiovascular risk (10-20% risk of heart attack in next 10 years) who may benefit from additional risk stratification beyond traditional cholesterol screening.
- People with borderline cholesterol levels or normal cholesterol who want to assess their cardiovascular risk through inflammatory markers.
- Those with family history of heart disease who are seeking comprehensive cardiovascular risk assessment to guide preventive care decisions.
- Individuals with metabolic syndrome, diabetes, or other conditions associated with chronic low-grade inflammation who need cardiovascular risk evaluation.
- Adults over 40 considering statin therapy or other cardiovascular prevention strategies who want additional risk information to guide treatment decisions.
- People monitoring the effectiveness of anti-inflammatory lifestyle changes such as diet modifications, exercise programs, or weight loss efforts.
- Individuals with autoimmune conditions or chronic inflammatory diseases who need to assess their cardiovascular risk associated with systemic inflammation.
What to expect
Preparation
No fasting is required for hs-CRP testing. However, testing should be avoided during acute illness, infection, recent injury, or surgery as these conditions can temporarily elevate CRP levels. For cardiovascular risk assessment, testing should be performed when individuals are in a stable, healthy state.
Sample Type
The test requires a simple blood draw, typically from a vein in the arm. The blood sample collection takes just a few minutes and involves minimal discomfort.
Collection
At the lab location, a trained phlebotomist will clean the injection site, insert a small needle to draw blood into a collection tube, and apply a bandage. The entire process typically takes less than 10 minutes.
Turnaround
Results are typically available within 1-3 business days after sample collection. Results will be accessible through your secure online portal with no doctor visit required.
Understanding your results
hs-CRP levels are interpreted for cardiovascular risk as follows: levels below 1 mg/L indicate low risk, levels between 1-3 mg/L indicate moderate risk, and levels above 3 mg/L indicate high risk. For optimal cardiovascular risk assessment, two measurements taken at least 2 weeks apart may be recommended to establish a stable baseline level.
| Population | Reference Range | Notes |
|---|---|---|
| Adults (Cardiovascular Risk Assessment) | <1.0 mg/L = Low risk, 1.0-3.0 mg/L = Moderate risk, >3.0 mg/L = High risk | These ranges specifically apply to cardiovascular risk stratification in stable individuals |
| Adults (Acute Inflammation Detection) | >10.0 mg/L typically indicates acute inflammation or infection | Very high levels suggest ongoing acute inflammatory process rather than cardiovascular risk |
Reference ranges may vary by laboratory and individual factors. Results should be interpreted by a healthcare provider in the context of your overall health.
What does a “Low” result mean?
Low hs-CRP levels (<1.0 mg/L) are generally considered desirable and reflect low overall cardiovascular risk. Since normal CRP levels are generally less than 0.9 mg/dL, there is no clinically significant "low" level. Consistently low levels in healthy individuals indicate minimal systemic inflammation and lower risk for cardiovascular events. However, hs-CRP should be interpreted alongside other cardiovascular risk factors rather than used in isolation for risk assessment.
What does a “High” result mean?
Elevated hs-CRP levels (≥2-3 mg/L) are associated with increased risk of heart attack, stroke, and other cardiovascular events. Research shows that CRP levels above 2.4 mg/L are associated with doubled risk of coronary events compared to levels below 1 mg/L. Very high levels (>10 mg/L) typically indicate acute inflammation from infection, injury, or inflammatory disease rather than cardiovascular risk. Persistently elevated levels may suggest chronic inflammatory conditions, metabolic syndrome, or ongoing tissue damage that warrants further medical evaluation.
Privacy & confidentiality
Your hs-CRP test results are completely confidential and protected by HIPAA regulations. Results are not shared with your personal doctor unless you choose to do so, will not be added to your medical records, and will not appear on insurance explanations of benefits since no insurance billing is involved.
Frequently asked questions
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CPT Code: 86141
This test may not be available in: NY, NJ, RI
This page is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider regarding any health concerns. LevelPanel does not diagnose, treat, or prescribe.
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Not sure if this is the right test? Contact our care team for guidance.