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CRP Blood Test (hs-CRP)

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Our hs-CRP blood test checks the level of inflammation in your body by measuring the amount of C-reactive protein in the blood. High inflammation can be an indication of a poor diet and keeping your levels low can help to keep your heart healthy.
What's included
your discount will be applied at checkout

Why Test Your
CRP Levels?

CRP or C-reactive protein, is a biomarker for inflammation. It is a protein that increases when there are high levels of inflammation present, and so can be good indicator of infection, injury, or a poor diet. As inflammation is linked to heart disease, lowering your levels will help to keep your heart healthy.

CRP will increase immediately in response to intense exercise but should return to normal within 20 hours. So, if you’re an athlete or exercise regularly, measuring your CRP level can  help you to calculate the recovery time needed between sessions or after and event. 

When to take This test

The best time to take the test is between 8am and 10am. As CRP levels rise dramatically following exercise, it is best to carry out the test before you workout or a few days after.

What is a CRP test?

A CRP test measures the level of C-reactive protein in your body and is used to detect inflammation or infection. CRP is created in the liver and transported to the blood in response to an inflammation.

The main purpose of a CRP test is to detect inflammation including part of assessing risk of CVD (cardio vascular disease), infections and as a method of monitoring inflammatory conditions.

What are normal levels of CRP?

A CRP test checks for infection markers in your blood, and as such levels of C-reactive protein are generally low. Normal levels of CRP are between 0 and 5mg/L. High levels of CRP can be attributed to infection, inflammation and exercise. CRP levels of 10mg/L or higher are considered high.

CRP will increase immediately in response to intense exercise but should return to normal within 20 hours. So, if you’re an athlete or exercise regularly, measuring your CRP level can help you to calculate the recovery time needed between sessions or after an event.

What Causes Inflammation In The Body?

Inflammation is the body’s natural response to fighting off things that it thinks will harm it like toxins, bacteria, viruses and injuries and is part of the body’s immune response.

If an invader or an injury is detected, an immune response is triggered and the cells in your immune system release chemicals and antibodies to help fight it off as well as increasing blood flow to the affected area. That’s why you may get symptoms such as redness, swelling and heat around the site of infection or inflammation. This type of inflammation is acute and usually only lasts for a few hours or days.

What is chronic inflammation?

Chronic inflammation, on the other hand, occurs when the inflammatory response by your body is prolonged and is constantly in a state of alert.

This type of inflammation is believed to play a key role in the development of chronic illnesses such as heart disease and cancer.

Causes of chronic inflammation include:

  • Untreated infections or injuries
  • Autoimmune conditions
  • Smoking
  • Poor diet
  • Obesity
  • Stress
  • Alcohol consumption

By understanding the levels of inflammation in your body you can help reduce your risk of chronic disease by implementing lifestyle changes and keep your body in the best of health.

Man drinking a beer
crp range
is the normal range for CRP.
crp conditions
According to Forth’s data women have higher inflammation levels (CRP 2.37 mg/L) than men (CRP 1.76 mg/L).
Dr Nicky Keay
the Experts Opinion

“CRP is good for assessing a number of health issues. As CRP is a biomarker for inflammation, high levels can be a sign of a bacterial infection or an autoimmune condition. It is also used alongside heart biomarkers to check a person’s overall risk of stroke and heart disease. Your lifestyle can also raise CRP levels through intense exercise, being overweight, smoking and drinking too much alcohol. Normal CRP levels are between 0 and 5 mg/L. Raised CRP levels need further investigation, which is why they are often measured alongside other biomarkers.”

Dr Nicola Keay
Forth Chief Medical Officer

improve your unique self

Want to improve your health & wellbeing? Forth gives you insight into your body’s key biomarkers. By tracking essential markers overtime you can build a picture of your own unique self and discover how your body responds to the changes you make so you can reach your personal best.

Frequently asked questions

 Here are some of the most frequently asked questions. If you need anything else try our help section.

  • What should CRP levels be?

    The normal level of CRP is between 0 – 5 mg/L.

  • Can I improve my result?

    Yes, if your CRP levels are raised because of low-grade inflammation linked to obesity, smoking, diet, or alcohol, then there are changes you can make to your lifestyle to help reduce your result.

    For example, eating a Mediterranean style diet that is high in fruit, vegetables, whole grains, nuts, and fish has been shown to lower inflammation in people who are overweight or have type 2 diabetes.

    Cutting down alcohol to less than 14 units per week can also help to improve results.

    Finally, if you exercise regularly, ensure you are giving your body enough time to recover between sessions.  CRP levels can take 20 hours to recover after exercise.

  • What does it mean if I have a high CRP level?

    If you exercise regularly, raised CRP levels can indicate that you are not giving your body enough recovery time between intense periods of exercise.

    High CRP levels can also indicate an infection within the body as a result of toxins, bacteria, viruses, and injuries.

    Raised levels of C-reactive protein can also indicate an increased risk of developing heart disease.

    It can also indicate that you have a bacterial infection or have an autoimmune condition like:

    • Rheumatoid arthritis
    • Lupus
    • Inflammatory bowel disease (IBD)

    Knowing you have high levels of CRP will enable you to look into other areas of your health, such as cholesterol levels, and make changes to your lifestyle in order to lower the level of inflammation in the body.

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Looking for a bespoke test?

Want to add more biomarkers to your test? That’s no problem. All of our tests can be personalised.  Just use our ‘customise this test’ button below to see the list of biomarkers which you can add to your test and get analysed at the same time. 

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