Lab test
CRP Test (C-Reactive Protein)
Below is a plain-language overview of the crp test (c-reactive protein). A C-reactive protein (CRP) test measures inflammation in your body. It is often used to detect infection or inflammatory conditions.
What this test is
C-reactive protein (CRP) is a substance produced by the liver. When inflammation is present in the body, the liver releases CRP into the bloodstream.
What it measures
- C-Reactive Protein (CRP) — a marker of inflammation and infection
What the test involves
This test requires a blood sample. A healthcare professional will draw blood from a vein in your arm using a needle.
Why it is often ordered
Clinicians may order a CRP test to help identify the presence of inflammation or infection. It can also be used to monitor the effectiveness of treatment for inflammatory diseases.
Preparation
Follow the specific instructions provided by the laboratory where you will have your blood drawn. Generally, no special preparation is needed for this test.
How results are reported
Results are typically available within one to three business days. Reference ranges, which indicate what is considered normal, vary between laboratories.
Before you go
- Specific preparation instructions
- How results are reported
- Typical turnaround time
FAQ
Frequently asked questions
What does a high CRP level mean?
A high CRP level suggests that there is inflammation somewhere in your body. This inflammation can be caused by various conditions, including infections, autoimmune diseases, or injuries.
What does a low CRP level mean?
A low CRP level generally indicates that there is no significant inflammation in your body. However, it is important to interpret this result in the context of your overall health and other diagnostic information.
Can CRP detect specific diseases?
A CRP test is a general marker for inflammation and does not identify a specific disease. Your clinician will use this result along with other tests and your medical history to make a diagnosis.
How often should I have a CRP test?
The frequency of CRP testing depends on your individual health status and why your clinician ordered the test. They will determine if repeat testing is necessary.
Related
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Locations
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