Compare this test’s laboratory options
C-Reactive Protein (CRP)
Quest Diagnostics1 test optionFrom $16.80
C-Reactive Protein (CRP)
Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
C-Reactive Protein (CRP)
This test measures the level of CRP in your blood to identify inflammation and monitor conditions like bacterial infections, rheumatic fever, arthritis, heart attacks, and cancer. It's also used to check inflammation levels after surgery. However, it's important to note that this test might not pick up small increases in CRP that could indicate a higher risk of heart disease.
What patients is this test right for?This test is often ordered if you're experiencing symptoms of inflammation or to monitor the treatment of conditions associated with increased CRP levels.
Symptoms of inflammation can include:• Fever
• Redness
• Swelling
• Pain
• General feeling of being unwell
What type of sample is required for this test?1 mL serum.
Test ResourcesNot available.
Additional test information
C-Reactive Protein (CRP) – This test measures the level of CRP in your blood to identify inflammation and monitor conditions like bacterial infections, rheumatic fever, arthritis, heart attacks, and cancer. It's also used to check inflammation levels after surgery. However, it's important to note that this test might not pick up small increases in CRP that could indicate a higher risk of heart disease.
Collection and processing
- Sample type: Serum
- Fasting: No
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
C-Reactive Protein (CRP)
This test measures the level of CRP in your blood to identify inflammation and monitor conditions like bacterial infections, rheumatic fever, arthritis, heart attacks, and cancer. It's also used to check inflammation levels after surgery. However, it's important to note that this test might not pick up small increases in CRP that could indicate a higher risk of heart disease.
What patients is this test right for?This test is often ordered if you're experiencing symptoms of inflammation or to monitor the treatment of conditions associated with increased CRP levels.
Symptoms of inflammation can include:• Fever
• Redness
• Swelling
• Pain
• General feeling of being unwell
What type of sample is required for this test?1 mL serum.
Test ResourcesNot available.
Additional details
C-Reactive Protein (CRP) - This test measures the level of CRP in your blood to identify inflammation and monitor conditions like bacterial infections, rheumatic fever, arthritis, heart attacks, and cancer. It's also used to check inflammation levels after surgery. However, it's important to note that this test might not pick up small increases in CRP that could indicate a higher risk of heart disease.
Highlighted health areas
- Cardiovascular
- Immune System
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- C-Reactive Protein