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C-Reactive Protein

C-Reactive Protein (CRP) is a blood test used to identify inflammation in the body. This test can help to determine severity of inflammation and to help monitor treatment of inflammation. 

CRP is a protein that is made in the liver and secreted into the blood. Concentrations of CRP can increase in the blood within a few hours of inflammatory injury or infection.  CRP can elevate very quickly with presenting inflammation and decrease just as quickly with resolution.  This makes it a valuable test to help monitor effective anti-inflammatory treatment.

This test can be used if there is a suspected inflammatory disorder present. These disorders can include:

  • Arthritis
  • Crohn’s Disease
  • Ulcerative Colitis
  • Lupus
  • Scleroderma
  • Sjogren’s Syndrome
  • Diabetes
  • Hashimoto’s thyroiditis
  • Graves’ disease
  • Coeliac Disease
  • Multiple sclerosis
  • Addison’s disease


The CRP test is often referred for alongside a test called Erythrocyte sedimentation rate (ESR). Both of these tests give information about the manifestation of inflammation.  However ESR levels take longer to reduce after inflammation or infection has passed.  The CRP level will drop to normal as soon as treatment has been successful whereas ESR levels may take a while longer to reach normal ranges.


Specimen Requirements

A blood specimen is required, which can be taken at any time of the day.  Fasting is not required.


Specimen Collection

Once the practitioner has given the patient their request form, the patient takes it to their nearest Australian Clinical Labs collection centre.  If you are unsure of your nearest collection centre head to location on our website or call us on 1300 554 480 between 9.00am and 5.00pm Monday to Friday for details.


Turnaround Time

Turnaround time is usually 7-10 working days.


Patient Preparation

Patients does not need to fast or make any special preparation before having blood collected.


Test Results

Patient results are delivered via electronic download unless requested otherwise. Results can also be issued via hardcopy, fax or web based e-viewer.


Technical Support

All Australian Clinical Labs Functional Pathology tests are accompanied by an Interpretive Guide to assist practitioners in their clinical understanding and patient management for each result. Australian Clinical Labs Functional Pathology also has experienced full time Technical Advisors available for practitioners to discuss appropriate test selection, interpretation of test results, individual cases and other technical matters. Please call 1300 55 44 80 between the hours of 9:00am and 5:00pm  AEST or email csfp@AustralianClinicalLabs.com.au