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C-reactive protein (CRP) by turbidimetry (high-sensitivity) in serum/plasma

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

This test measures a protein called C-reactive protein (CRP), which your body produces in response to inflammation. It helps doctors assess whether inflammation is present in your body.

Quick summary

["hs-CRP helps track inflammation, aiding in early detection of conditions like infections, autoimmune diseases, or heart risks."]

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

Key facts at a glance

LOINC
87620-1
Short code
CAURITS2
Synonyms
C auris ITS2 Spec Ql NAA+probe
Category
chemistry
Sample
serum
Container
Sterile, leak-proof, screw-cap container or swab transport system (e.g., Copan ESwab, BD ESwab, or equivalent viral/fungal transport medium); sterile container for fluid or tissue specimens
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
0–120 years
Method
probe-amp-tar
CPT
87798
SNOMED
122451000119108
Specimen volume
Swab specimens: 1 swab; Fluid/tissue specimens: 1-5 mL or 1-2 g of tissue
Stability
Room temperature: 24 hours; Refrigerated (2-8°C): 7 days; Frozen (-70°C or below): 30 days. Transport to laboratory promptly to preserve nucleic acid integrity.
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–48 hours
Order
routine

Why Is This Test Done?

Healthcare providers may order hs-CRP to monitor chronic conditions like arthritis or heart disease, check for infections, or evaluate risk after a heart attack or stroke. It can also help guide treatment decisions for conditions involving inflammation.

What to Expect Before the Test

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

What the Results Mean

Results are typically reported in milligrams per liter (mg/L). Higher levels may suggest inflammation, but they don’t always indicate a specific cause. Your doctor will interpret results in the context of your overall health.

Common Conditions Monitored

hs-CRP is often used to monitor conditions like rheumatoid arthritis, lupus, or cardiovascular risks. It may also help assess response to treatments targeting inflammation.

Reference range

Negative (Candida auris DNA not detected). Results are reported qualitatively as Detected or Not Detected.N/A

Specimen: serum

No fasting required. Specimen should be collected prior to initiation of antifungal therapy whenever possible, as antifungal agents may reduce organism burden and affect detection sensitivity.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated CRP levels can signal inflammation, which may be due to infections, injuries, autoimmune diseases, or other health issues. However, it’s not a standalone test for diagnosis—results are usually reviewed alongside other symptoms and tests.

Short name

hs-CRP

Frequently asked questions

What does a high hs-CRP level mean?
A high hs-CRP level may indicate inflammation in your body, which can be caused by infections, autoimmune diseases, or other health conditions. It doesn’t always point to a specific problem, so your doctor will review it with your full medical picture.
Can I eat or drink before this test?
You can eat and drink normally unless your doctor specifies otherwise. No fasting is required for this blood test.
How often is hs-CRP tested?
Frequency depends on your health needs. Some people get it yearly to monitor chronic conditions, while others may have it less often based on their treatment plan or symptoms.
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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