C-Reactive Protein (CRP)

The Most Sensitive Acute Phase Reactant

Benefits of the Randox CRP Assay

Limited Interference

The Randox CRP assay has shown to have limited interference from conjugate and free bilirubin, haemoglobin, Intralipid® and triglycerides.

Measuring range

Wide measuring range

The Randox CRP assay has a measuring range of 2.88 – 220 mg/l for the comfortable detection of clinically important results.

Liquid ready-to-use

Liquid ready-to-use

The Randox CRP assay is available in a liquid ready-to-use format for convenience and ease-of-use.

Stable to expiry

The Randox CRP assay is stable to expiry when stored at +2oC to +8oC.

Calibrator & Controls

Dedicated calibrator and controls available

Dedicated CRP calibrator and controls available offering a complete testing package.

Applications available

Applications available detailing instrument-specific settings for the convenient use of the Randox CRP assay on a variety of clinical chemistry analysers.

  • Ordering Information
  • Physiological Significance
  • CVD
  • CVA
  • AD
  • COVID-19
Cat NoSize    
CP7950R1 7 x 20ml
R2 2 x 12ml
EnquireKit Insert RequestMSDSBuy Online
CP9742R1 6 x 66ml
R2 6 x 13ml
EnquireKit Insert RequestMSDSBuy Online
CP3826R1 6 x 20ml
R2 3 x 9ml
EnquireKit Insert RequestMSDSBuy Online
CP2714100TEnquireKit Insert RequestMSDSBuy Online

Instrument Specific Applications (ISA’s) are available for a wide range of biochemistry analysers.  Contact us to enquire about your specific analyser.

C-reactive protein (CRP) is the dominant acute phase protein in mammals 1. Elevated levels of CRP are not disease specific but are synthesised, by hepatocytes, in response to pro-inflammatory cytokines during inflammatory and/or infectious processes 2, 3. The physiological function of CRP is the enhancement of cell-mediated immunity through the promotion of phagocytosis, accelerated chemotaxis and the activation of platelets 1.

Known as a biomarker of acute inflammation, many large-scale prospective studies demonstrate the association between CRP and chronic inflammation, including: cardiovascular disease (CVD), cerebrovascular accident (CVA) (ischaemic stroke), Alzheimer’s Disease, and age-related macular degeneration 2.

CRP is a major cardiovascular disease (CVD) risk factor. A CRP level of >10mg/l correlates with a >4% risk of developing a fatal CVD event in 10 years, including: myocardial infarction, peripheral arterial disease, stroke and sudden cardiac death. Inflammation is an integral part in the development and rapid progression of coronary heart disease (CHD) 4.

The coronary artery disease (CAD) process is characterised by increasing levels of inflammatory biomarkers. CRP is not only an excellent biomarker or mediator of atherosclerosis but is a strong independent marker in the prediction of adverse CV events, including: myocardial infarction, ischaemic stroke, and sudden cardiac death. CPR can be utilised as a clinical guide for the diagnosis, management and prognosis of CVD 5.

The development of a cerebrovascular accident (CVA) (stroke) is the result of longstanding vascular inflammation, thrombosis, plaque rupture and subsequent brain ischaemia or infarction. Elevated CRP levels is associated with the development of CVA 6.

High sensitivity CRP (hsCRP) plays an important role in the early diagnosis, prognosis, long and short death risk and prediction of etiological subtypes of stroke 7. Find out more about the Randox hsCRP assay.

Alzheimer’s disease (AD) is the most common form of dementia, accounting for 60-80% of dementia cases 7. CRP is believed to be involved in the pathophysiology of cerebral small vessel disease (CSVD) and neurodegeneration 8. CRP levels are associated with cognitive impairment 9. Inflammation should be considered as a target treatment, with the aim of delaying the progression of subclinical brain damage and cognitive decline 8. Midlife elevations in CRP are associated with an increased risk of developing AD. Patients with AD, CRP elevations continues to predict increased dementia severity suggestive of a possible pro-inflammatory endophenotype in AD 10.

In COVID-19 patients, CRP testing has proved to perform well in discriminating disease severity and predicting adverse outcomes 11. CRP levels positively correlates with lung lesions, reflecting disease severity, and should be considered a key indicator in disease monitoring (see fig. 1) 12.

CRP levels are associated with computed tomography (CT) scores and COVID-19 disease development, with CRP levels increasing in the initial stage of severe COVID-19, prior to the CT findings 13.

Elevated CRP levels have been identified in 86% of patients admitted to hospital. CRP measurements are useful in diagnosis, assessing prognosis and monitoring for clinical improvements or deterioration 14.

Fig. 1. Relation between CRP levels, clinical severity, and lung lesions 12

Want to know more?

Contact us or download the specific proteins brochure to learn more.

Related Products

CRP Calibrator

CRP Control

Specific Protein EQA

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