CRP (C-Reactive Protein, Quant.)
What Is This Test?
The CRP (C-Reactive Protein, Quantitative) test is a blood test that measures the exact level of C-reactive protein (CRP) in your blood. CRP is a protein produced by the liver in response to inflammation. Elevated CRP levels can indicate the presence of infection, inflammatory diseases, tissue injury, or certain chronic medical conditions.
Unlike the qualitative CRP test, which simply reports whether CRP is present, the quantitative CRP test provides the precise concentration of CRP, helping doctors assess the severity of inflammation and monitor response to treatment.
Why this test is performed?
Why is this Test Performed?
Doctors may recommend the CRP (Quantitative) test to:
- Detect acute or chronic inflammation
- Diagnose bacterial or viral infections
- Evaluate autoimmune disorders such as rheumatoid arthritis or lupus
- Monitor treatment response for inflammatory diseases
- Assess the severity of infections
- Investigate unexplained fever
- Detect inflammation after surgery or injury
- Monitor chronic inflammatory conditions
- Support the diagnosis of inflammatory bowel disease (IBD)
Test Preparation
No special preparation is generally required.
You may eat and drink normally unless instructed otherwise by your doctor.
Inform your healthcare provider about any medications, especially anti-inflammatory drugs, steroids, or antibiotics, as they may influence CRP levels.
Tell your doctor about any recent surgery, injury, or vaccination.
Medical disclaimer
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.
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