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C-Reactive protein (CRP) Blood Test

Original price £37.00 - Original price £37.00
Original price
£37.00 - £37.00
Current price £37.00

Take this test to measure the level of C-Reactive protein in your blood which is produced by the liver in response to inflammation.

  • Biomarkers: 1
  • Turnaround: 1-2 days

Simple and accurate blood test from a laboratory you can speak to.

Step 1. Choose sample collection option

Currently selected option: HOME KIT via Royal Mail Tracked 24

  • Available everywhere in mainland UK.
  • Includes everything you need to take a safe and suitable blood sample in about 15 minutes.
  • Post the sample back to our laboratory via Royal Mail Tracked 24.

Re-test guarantee

Stay ahead of inflammation and infection with our C-Reactive Protein (CRP) Blood Test. Our easy-to-use home kits offer quick, confidential results from our CQC-accredited lab, usually within 24 hours.

Our Health Dashboard allows you to monitor your CRP levels over time and store and compare any results. With our comprehensive health testing service, you'll gain the insights you need to make informed decisions and take preventative action.

About the C-Reactive Protein CRP Blood Test

CRP stands for C-reactive protein, which is a protein produced by the liver in response to inflammation. The CRP biomarker test, also known as the high-sensitivity C-reactive protein (hs-CRP) test, measures the level of CRP in the blood. This test is often used as a marker of inflammation in the body.

Inflammation is a natural response of the immune system to infections, injuries, and certain diseases. However, chronic or prolonged inflammation is linked to various health conditions, including cardiovascular diseases (such as heart disease and stroke), autoimmune disorders, and some cancers.

1 Biomarker


    - C-Reactive protein (CRP)


    Need more biomarkers? Check out our Essential All Systems Blood Test

Most of the biomarkers we offer in the "ready made" panels are also available separately. So if your favourite test panel is missing a biomarker you would like to have, no problem, you can add whatever you need to one of our standard panels using the "Pick-n-mix" options, such as this one.


    For most biomarkers our usual turnaround time is 24-48 hours, or less, from the time your sample is in our lab. We do not wait for all the results to complete before sending them to you, so you may start receiving results the same day for most cases, or as results become available.

    We are extremely proud of our very short turnaround times and a very efficient laboratory processes. Whilst we accommodate the shortest of time scales, with some results available within hours, for this particular test the usual turnaround time is:

    1-2 days

Doctor's notes

Hi, I am Dr. Adam Staten and here's my view on this test as a GP and Clinical Director at One Day Tests.

CRP is a critical marker for inflammation and infection. Elevated levels can signify a variety of health issues, from acute infections to chronic conditions. Monitoring your CRP levels is a proactive way to stay ahead of potential health challenges.

This test is an invaluable tool for assessing your overall health status. Whether you're managing a specific condition or simply maintaining a proactive approach to your health, this test can guide your healthcare decisions.

Red flag symptoms for the C-Reactive protein (CRP) Blood Test

Even if your blood test is normal, you should still see your doctor if you have any of the symptoms below. 

  • Persistent fever
  • Unexplained fatigue
  • Joint pain or stiffness
  • Shortness of breath
  • Chest pain

These symptoms may indicate an underlying issue that requires prompt medical attention. The CRP Blood Test can be a valuable step in diagnosing and managing your condition.

Your Results and Health Dashboard

The results of your C-Reactive protein (CRP) Blood Test will be emailed to you as a secured PDF file, ready for your GP and will also be uploaded to our Health Dashboard area of the website. It’s a unique and powerful tool, powered by our in-house clinical analysis research, to match your biomarkers across test panels and symptoms, as well as provide clinical commentary on all individual biomarkers you tested for.

The health dashboard will also provide "panel level" commentary - a birds eye view of the biomarkers that were tested. This feature allows you to view your test results and clinical commentary, and compare them to previous results, giving you a clear understanding of how your health is progressing.

By using the Health Dashboard, you can identify changes in your biomarkers and make necessary adjustments to your lifestyle. This added value is immense, as it empowers you to monitor your health and make informed decisions about your well-being.

It's free and is available with all of our tests.

Save on continuous monitoring with our subscription plan

The best way to look after your health is to do so regularly. This is easy to do with our continual monitoring plans which give you a discount on future blood tests. You choose the frequency and we'll do the rest.

When you purchase a subscription, we will deliver your home test kits or allow you to book appointments in line with your chosen frequency. You will be able to track your biomarkers over time in our powerful Health Dashboard, where results will be automatically updated for you. There is a minimum of 3 tests with any subscription, after which you can pause/restart/cancel at any time.

Special instructions

Hi, I am Stefania Brown, I am the Laboratory Manager at One Day Tests and here are the lab's special requests for the C-Reactive protein (CRP) Blood Test.

To ensure accurate CRP test results, avoid strenuous exercise for 24-48 hours prior to the test. Consult your physician about any medications you're taking that may affect CRP levels.

Venepuncture appointment - how to prepare

If you are coming into one of our clinics for the test, this is what you need to do before you arrive:

  • Drink plenty of water about an hour before the appointment.
  • Avoid coffee/tea/energy drinks. Water is good!
  • That’s it! We’ll do the rest.

Home test kit for C-Reactive protein (CRP) Blood Test - how it works

Our blood test kits are simple and convenient.

The most important step in doing a blood test at home is to read the instructions very carefully. The process is very simple, but there are a few pitfalls you need to be aware of - you will save yourself a lot of time if you do it right the first time around!

  • Full printed instructions will arrive with your kit - please read them carefully.
  • Drink plenty before taking the sample and warm your hands up in the sink with warm water for a few minutes. This will make your blood flow much better.
  • Fill the tubes to the top line. We don’t need much blood; filling tubes to the top line is about 15 drops of blood.
  • Post the samples on the same day you take them, before midday, Monday to Thursday. If you post it any other time it might get to us late or be stuck at a sorting office over the weekend. You will then have to do it again.
  • Package the sample in the same box the kit came in. Otherwise, Royal Mail or DPD will reject it. The sample tubes go into a pouch, then into a cardboard box, and then into a return envelope. All of this is provided in the kit: please use it.

We look forward to receiving your sample in our lab!

How the finger prick home test kit for C-Reactive protein (CRP) Blood Test works - from Dr. Adam Staten

Why choose us?

Hello! My name is Dr. Vinesh Mistry, I am part of the GP team here at One Day Tests and here is why you should trust us to test your blood.

We run our own regulated laboratories and our own accredited clinics. We manufacture our own approved home sample collection kits. Your results are looked after by our fantastic clinical governance team and our super-talented biomedical science team.

When you book your test with us - you book directly with the lab. This means accuracy and responsible duty of care, direct access to the provider and extremely fast turnaround times.

Finally, our customer services rock! You can ask the lab a question any time or you can speak to a real human. It's good to WhatsApp, email on or give us a call on 0845 527 07 67.

Frequently Asked Questions

Hi, I am Lana Nela, Lead Nurse, and here is what we are frequently asked about this test.

What does the CRP Blood Test measure?

The CRP Blood Test measures the concentration of C-reactive protein in your blood. Elevated levels can be an indicator of inflammation, infection, or other medical conditions.

Why is the CRP test important?

The CRP test is important because it can serve as an early marker for conditions like infections, chronic inflammatory diseases, and even some cancers. It's often used to assess the risk of cardiovascular diseases as well.

What can cause elevated CRP levels?

Elevated CRP levels can be caused by a variety of factors, including bacterial infections, viral infections, inflammatory diseases like rheumatoid arthritis, and injuries. Lifestyle factors such as poor diet, lack of exercise, and smoking can also contribute to elevated CRP levels.

Why take this test?

Hi, I am Dr. Marco Esposito and here is why it's important to take this test.
  • The CRP test is a reliable marker for inflammation in the body, which can be a sign of a medical condition that needs attention
  • This test can be part of a comprehensive approach to assess your cardiovascular health
  • Determine the severity of an infection and guide treatment options
  • CRP levels can indicate how well the body is healing and whether an infection has occurred

Is this test right for you?

Hi, I am Sandeep Patel, I am the Laboratory Director at One Day Tests. Here are the symptoms that you may wish to address with this test.

Given the vital role of inflammation as a marker for various health conditions, the CRP test is essential for gauging your body's inflammatory response and identifying signs of potential issues.

For individuals managing chronic ailments like arthritis, this test is invaluable for monitoring the efficacy of your treatment plans and making necessary adjustments. If you're experiencing symptoms such as persistent fever, fatigue, or joint pain, the CRP test can be instrumental in diagnosing and guiding your healthcare strategy.


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Why blood tests are important.