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C-reactive protein (high-sensitivity) concentration

Published: August 9, 2026Updated: August 16, 2026

This test measures a protein in your blood that rises when inflammation is present, often used to assess general inflammation or risk of heart disease.

Quick summary

["hs-CRP helps track inflammation levels for long-term health monitoring."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
82709-7
Short code
CTA TA
Synonyms
CTA TA
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ct-angio
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your doctor may order this test to check for signs of inflammation in your body, monitor conditions like heart disease, or evaluate risk factors for cardiovascular events. It’s sometimes used alongside other tests to assess overall health or response to treatment.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into your arm or vein to draw blood. If you’re fasting, follow your doctor’s instructions, as some tests require it.

What the Results Mean

Results are typically reported in milligrams per liter (mg/L). Higher levels may indicate inflammation, infection, or other health concerns. Your doctor will interpret the results in the context of your medical history and other tests.

Common Conditions Monitored

This test is often used to monitor conditions like coronary artery disease, rheumatoid arthritis, or other inflammatory diseases. It can also help track how well treatments are working.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: hs-CRP is a marker for systemic inflammation, which can be linked to increased risk of cardiovascular events, autoimmune diseases, and other chronic conditions. While not a definitive diagnostic tool, it provides valuable insight for risk stratification and management.

Short name

hs-CRP

Frequently asked questions

What does a high hs-CRP level mean?
A high hs-CRP level suggests increased inflammation in your body, which may raise concerns about conditions like heart disease, infection, or autoimmune disorders. Your doctor will discuss this with you based on your full medical picture.
Can lifestyle changes affect hs-CRP levels?
Yes, diet, exercise, and stress management can influence inflammation levels. Small, sustainable lifestyle changes may help lower hs-CRP over time.
Is hs-CRP the same as a general inflammation test?
Yes, hs-CRP is a widely used marker for inflammation, though other tests (like erythrocyte sedimentation rate) may also be used depending on clinical needs.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy