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C-reactive protein (high-sensitivity) concentration

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

This test measures a protein your body produces in response to inflammation, helping doctors assess low-level inflammation that may not be obvious from other tests.

Quick summary

["hs-CRP helps track subtle inflammation, often used alongside other tests to guide treatment decisions."]

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

Key facts at a glance

LOINC
24696-7
Short code
CT Face
Synonyms
CT Face
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
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 chronic inflammation, monitor conditions like cardiovascular disease, or evaluate risk for future health issues. It’s sometimes used in combination with other tests to provide a clearer picture of your health status.

What Does the Result Mean?

Results are not given in absolute numbers here, as reference ranges vary by lab and patient factors. Instead, your doctor will interpret the result in the context of your overall health and other test results.

Common Uses and Conditions

This test is often used in routine check-ups, especially for adults at higher risk of heart disease or other inflammatory conditions. It may also be part of a broader evaluation for autoimmune diseases or after an injury or illness.

What to Expect Before the Test

No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw a blood sample. If you’re on blood thinners, let your doctor know before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

hs-CRP

Frequently asked questions

How often should I get this test?
Your doctor will determine the frequency based on your health needs. Some people get it every few years as part of routine care, while others may need it more often if they have ongoing health conditions.
What does a high or low result mean for me?
A high result may indicate inflammation that your body isn’t easily visible through other tests. A low result suggests minimal inflammation, but it’s not definitive—your doctor will consider your full medical picture.
Can diet or exercise affect hs-CRP levels?
Yes, lifestyle factors like diet, exercise, and weight can influence inflammation levels. Eating a heart-healthy diet, staying active, and managing stress may help lower hs-CRP over time.
  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