CRP Normal Range: How Much CRP Level is Dangerous (2024)

HomeLab TestCRP Normal Range: How Much CRP Level is Dangerous

CRP Normal Range: How Much CRP Level is Dangerous
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CRP Normal Range: How Much CRP Level is Dangerous (1)

Medically Reviewed By
Dr. Ragiinii Sharma

Written By Prekshi Garg
on Feb 24, 2022

Last Edit Made By Prekshi Garg
on Apr 15, 2024

CRP Normal Range: How Much CRP Level is Dangerous (2)

C-reactive protein (CRP) is a blood marker for inflammation produced by the liver. A simple blood test measures the level of CRP in your body. CRP levels can help diagnose acute and chronic conditions that lead to inflammation such as infections, arthritis, and heart disease. Inflammation has also been linked to severe COVID-19 infections, and monitoring CRP levels can aid in identifying potential complications. Understanding the normal range of CRP and how to control your levels can be crucial in managing various health conditions. In this article, you will learn about the normal range of CRP, CRP levels in COVID-19 patients and ways to control your CRP levels.

Acute or chronic inflammation in the body could be a response against multiplediseases, including viral infections likeCovid-19.Look out for signs like abdominal pain, fatigue, chest pain, mouth sores, or joint pain. Symptoms like these indicate a possibility ofinflammationin the body. Getting aCRP testallows you to get a confirmation and treatment to treat it on time.

In this Article

  1. Normal Range of CRP Levels
  2. High Sensitivity CRP
  3. CRP Levels in COVID-19
  4. Ways to Reduce CRP Levels
  5. Takeaway
  6. FAQs

Normal Range of CRP Levels

In a healthy adult, a CRP value less than 3 mg/L is considered normal. The CRP values above 3 mg/L may indicate inflammation.

The degree of inflammation is often reflected in the magnitude of the CRP value, and higher levels may indicate more severe inflammation. However, it's important to note that CRP normal range levels can vary depending on various factors such as age, gender, and underlying health conditions. Therefore, it's important to interpret the CRP levels in conjunction with other relevant factors such as clinical symptoms, medical history, and imaging studies.

Different levels of CRP and their indications are tabulated below:

S.No.CRP LevelInferenceDescription
1.< 3 mg/LNormalIndicates healthy adults
2.3 mg/L - 10 mg/LNormal or minor elevationObserved in pregnant women or people with diabetes, depression, obesity, sedentary lifestyle, or smoking. It may also indicate the risk of cardiovascular diseases.
3.10 mg/L - 100 mg/LModerate elevationObserved in people with cancer, autoimmune disease, heart attack, and bronchitis.
4.100 mg/L - 500 mg/LMarked elevationObserved in people with acute bacterial infection, viral infection, or trauma.
5.> 500 mg/LSevere elevationAcute bacterial infection

High Sensitivity CRP (hsCRP)

A high sensitivity CRP (hsCRP) test is conducted to appropriately detect the levels of CRP that are below 10 mg/L. This hs-CRP test is often recommended for individuals who are at a higher risk of heart disease, as it can help detect low levels of inflammation that may not be picked up by a standard CRP test. The hs-CRP test is especially useful in predicting the risk of cardiovascular disease, as even low levels of inflammation can contribute to the development of heart disease over time.

The level of CRP in hs-CRP and their respective inferences are tabulated below:

S.No.hs-CRP level (mg/L)Inference
1.< 1.0Low risk of heart disease
2.1.0 - 3.0Moderate risk of heart disease
3.3.0 - 10.0High risk of heart disease

Regular monitoring of hs-CRP levels can aid in the early detection and management of cardiovascular disease, improving overall health outcomes.

CRP Levels in COVID-19

C-reactive protein is an essential biomarker in COVID-19 patients. This may be due to the overproduction of inflammatory cytokines during the infection. Higher levels of CRP were observed in patients with low oxygen saturation (< 90%) as compared to those with high oxygen saturation (> 90%). According to research studies, the levels of CRP in different groups of COVID-19 patients are tabulated below:

S.No.Patient GroupCRP Level (mg/L)
1.Hospitalized47.6 - 51.4
2.Death100 - 113
3.Recovered9.6 - 26.2
4.Admitted to the ICU with GI symptoms and without GI symptoms15.7 and7.9
5.Admitted to the ICU43.1 - 62.9
6.Mild7.6 - 23
7.Non-severe10 - 12.1

By monitoring CRP levels in COVID-19 patients, healthcare providers can gain valuable insights into disease progression and identify patients who may be at higher risk of severe illness and complications.

Ways to Reduce CRP Levels

With certain modifications in your diet and lifestyle, you can control your CRP levels and remain in CRP normal range. Certain steps that you can take to reduce your CRP levels are

  • Weight loss: According to a study, decreasing the total body weight and fat mass by 5% can cause an effective decrease in the CRP levels.
  • Optimistic approach: According to a study, having a negative mindset leads to increased CRP levels.
  • Exercise: Daily exercise and an active lifestyle are essential to maintain an optimum level of CRP.
  • Treat the underlying cause: To decrease the level of CRP, you need to target and treat the underlying disorder responsible for the elevated levels of CRP.
  • Diet: Including food items like apples, bananas, avocados, beans, broccoli, sprouts, legumes, strawberry, pear, and whole grains can help manage CRP levels.
  • Supplements and medicines can also reduce CRP levels in your blood. These should be taken only when prescribed by a registered medical doctor.
  • Stress-reducing techniques such as meditation, yoga, and deep breathing exercises can also help in managing CRP levels.
  • Avoiding smoking and limiting alcohol consumption is crucial to keep CRP levels in check.
  • Proper sleep hygiene is also important as lack of sleep can cause inflammation and increase CRP levels.
  • Consuming foods rich in omega-3 fatty acids such as fatty fish, nuts, and seeds can help reduce inflammation and lower CRP levels.

These lifestyle changes should be adopted as a long-term approach to manage CRP levels and maintain overall health. However, consulting a healthcare professional before making any significant changes to your diet or lifestyle is always recommended.


CRP levels are a key indicator of your health and help diagnose any inflammation or infection. However, it is important to note that increased CRP levels may not tell the exact site of inflammation or infection, and other diagnostic investigations may be required for the same. The levels of CRP reduce as the inflammation is treated. Hence, it serves as a very important prognostic marker. Lifestyle modifications also aid in decreasing the levels of CRP. You can better analyze your laboratory blood test reports now that you know about CRP normal range levelsand what they indicate.

Also, if you are experiencing symptoms of inflammation or infection, or if you are at a higher risk of heart disease, it is recommended to get your CRP levels tested. Redcliffe Labs provides a reliable and hassle-free experience with their CRP Test. With quick and precise reports, reporting as per NABL ISO guidelines, free home sample collection, and free doctor's consultation, you can take control of your health and get the necessary medical attention in time.

Frequently Asked Questions (FAQs)

  • What does the CRP level of 50 mg/L indicate?

In most cases, a CRP level of 50 mg/L or more indicates the existence of a bacterial infection in your body.

  • What is the CRP level in COVID-19?

The level of CRP in COVID-19 patients depends largely on the severity of the condition. Usually, the CRP levels in COVID-19 patients vary from 20 mg/L to 50 mg/L.

  • How can I get my CRP levels tested?

You can get your CRP level tested by a simple blood test. You can easily book a CRP blood test at Redcliffe labs from our official website or by calling our dedicated helpline number. Our phlebotomist will visit your place and collect your blood sample for the test at no added charge.

Leave a comment


  • Donna

    Apr 17, 2024 at 4:23 PM.

    HI,MY CRP is 27 and my doctor does not seem worried although I am and wondering what I can do to lower this myself?

  • Reneta Diddee

    Jan 29, 2024 at 1:01 AM.

    Hi my Hs CRP level is 13.5 is it dangerous.

    • Juvan Rana 6 yrs

      Apr 5, 2024 at 9:20 AM.

      Crp ലെവൽ 19.6%ആണ്. അപകടകര മാണോ

    • Myhealth Team

      Jan 30, 2024 at 12:32 PM.

      A Hs CRP level of 13.5 is elevated and may indicate inflammation or infection. It's important to consult a healthcare professional for further evaluation and appropriate management.

  • ダッチワイフ

    Jan 15, 2024 at 5:23 PM.

    Hurrah, that’s what I was looking for, what a material! present hereat this website, thanks admin of this web site.

    • Myhealth Team

      Jan 16, 2024 at 7:18 AM.

      We are glad you found the information you were looking for on this website! If you have any more questions or need further assistance, feel free to ask. Thank you for your positive feedback!

  • ラブドール

    Jan 15, 2024 at 5:00 PM.

    Greate post. Keep writing such kind of information on your blog.Im really impressed by your blog.Hey there, You’ve performed an incredible job.I’ll certainly digg it and in my view suggest to my friends.I’m confident they’ll be benefited from this website.

    • Myhealth Team

      Jan 16, 2024 at 7:21 AM.

      Thank you for your positive feedback! I'm delighted that you find the information valuable.

  • ラブドール

    Jan 15, 2024 at 1:34 PM.

    I love it when people get together and share opinions. Great blog, keep it up!

    • Myhealth Team

      Jan 16, 2024 at 7:25 AM.

      Thank you for your positive feedback! I'm delighted that you find the information valuable.

  • Darlene Dubeau

    Dec 19, 2023 at 4:45 PM.

    I just received results of a C-Reactive Protein (CRP) my results are 31.2mg/L ... what does that mean?

    • Myhealth Team

      Dec 22, 2023 at 12:12 PM.

      A C-Reactive Protein (CRP) level of 31.2 mg/L indicates elevated inflammation in the body. It's essential to consult with your healthcare provider to determine the cause and discuss appropriate next steps or treatments.

  • Jitendra Yadav

    Dec 11, 2023 at 1:30 PM.

    Sir, My hs-crp count is 5.3 mg/L while other parameters such as ldl, hdl, cholesterol, triglyceride, wbc are tested normal. Is there any risk with crp 5.3 mg/L ?

    • Myhealth Team

      Dec 11, 2023 at 1:51 PM.

      Hi Jitendra,Elevated hs-CRP levels at 5.3 mg/L may indicate inflammation. While other parameters are normal, it's crucial to consult your healthcare provider. They can assess your overall health and recommend any necessary follow-up tests or lifestyle adjustments.Thankyou

  • Yuthika Edirisinghe

    Sep 25, 2023 at 1:41 PM.

    my CRP leveal is 21 . is that wast

    • Myhealth Team

      Sep 26, 2023 at 1:21 PM.

      A CRP level of 21 mg/L is elevated and indicates inflammation. Consult a healthcare professional for further evaluation and guidance.

  • Naresh Rachakonda

    Jan 6, 2023 at 6:59 AM.

    Hello sir/madam,my child was 21years old,and his crp level is 12mg/l,any risks to the child

    • Jackie Sharratt

      Sep 29, 2023 at 3:34 PM.

      My raised crp levels are over 50. My doctor is not concerned as my white blood cells are normal. Should I be worried

  • Tariq Hameed

    Oct 28, 2022 at 12:23 PM.

    Hello,last month mere papa ki L4,L5 disc ki surgery hue thi khuch din theek rehne k bad us ki right thigh main pain start hogayi . Phir dr. ne Esr,Crp test karuaye Esr 58mm Ist hr aur Crp 1:32 report agayi . Ek hafta antibiotic khane k bad phir se test karwaye Esr 58mm Ist hr se bad kar 95 mm ponch gaya aur Crp 1:32 constantly same hai ... Aur pain bi continue hai..koi solution bataye kindly help what should i do.

    • Myhealth Team

      Oct 29, 2022 at 8:55 AM.

      you may join our community and you would be able to manage your CRP levels with proper health management and guidance

  • iHerb Code

    Oct 19, 2022 at 7:20 AM.

    Amusing topic

    • Myhealth Team

      Nov 3, 2022 at 8:52 AM.

      Thank you iHerb for your appreciation. We would keep coming up with more information and content on CRP and other related content.

CRP Normal Range: How Much CRP Level is Dangerous (2024)


CRP Normal Range: How Much CRP Level is Dangerous? ›

Interpretation of CRP levels:

How much CRP level is dangerous? ›

A CRP test result of more than 50 mg/dL is generally considered severe elevation. Results over 50 mg/L are associated with acute bacterial infections about 90% of the time.

What level of C-reactive protein is concerning? ›

C-reactive protein is measured in milligrams per liter (mg/L). Results equal to or greater than 8 mg/L or 10 mg/L are considered high. Range values vary depending on the lab doing the test. A high test result is a sign of inflammation.

What is a critical level of CRP? ›

CRP levels from 1 mg/dL to 10 mg/dL are thought to be a moderate increase. CRP Levels greater than 10 mg/dL are considered a marked increase.

Is a CRP level of 20 high? ›

The patients with the very highest levels of hsCRP —5 to 10, 10 to 20, or even greater than 20 mg/L—are, in fact, at the very highest risk. These are not false positives. These data help to explain why those with periodontal disease, arthritis, and other systemic inflammatory disorders all have higher vascular risk.

What level of CRP indicates sepsis? ›

Initial CRP levels did not differ among patients with sepsis or septic shock (median CRP level day 1 in sepsis: 150 (97–225) mg/l; septic shock: 127 (79–219) mg/l; p = 0.092). However, in the presence of septic shock, CRP was shown to increase until day 10 of ICU hospitalization (median 179 (66–225) mg/l).

When should I worry about CRP? ›

CRP levels can vary widely depending on the underlying condition causing inflammation. Generally, a CRP level of less than 10 mg/L is considered normal. CRP levels between 10 and 100 mg/L indicate mild to moderate inflammation, while levels above 100 mg/L indicate severe inflammation.

What CRP level indicates Crohn's disease? ›

Conclusion: CRP elevation in Inflammatory Bowel Disease is associated with active disease determined endoscopically, histologically, or radiographically. In both CD and UC, a CRP > 2.0 mg/dL predicts findings of active ileal disease at ileocolonoscopy.

Is CRP a tumor marker? ›

Elevated CRP levels (> 10 μg/ml) are associated with active, advanced cancer disease.

What cancers have high CRP? ›

Elevated CRP levels have been found to be associated with several cancers, including breast, lung, gastric, and colorectal cancer, hepatocellular carcinoma, and renal carcinoma (Roxburgh and McMillan, 2010; Wu et al., 2011).

What is the most common cause of high CRP? ›

Lifestyle: People who smoke, have obesity, or do little exercise may have higher-than-normal CRP levels. Minor injuries or infection: These conditions may temporarily raise CRP levels and conceal other potential conditions, such as diabetes or IBD.

What autoimmune disease causes high CRP? ›

The C-reactive protein (CRP) test is used to find inflammation in your body. Inflammation could be caused by different types of conditions, such as an infection or autoimmune disorders like rheumatoid arthritis or inflammatory bowel disease. This test measures the amount of CRP in your blood.

What is a high range for CRP test? ›

A high CRP is more than 10mg/L. This shows that there is inflammation somewhere in your body. Other tests might be necessary to find out where or which specific illness or infection is causing the inflammation. If you are being treated for an infection or inflammation, your CRP levels should decrease.

How to bring CRP levels down? ›

Limiting or avoiding inflammatory foods like refined carbohydrates, fried foods, red meat and processed meat can help reduce CRP. Instead, focus on eating more anti-inflammatory foods like leafy greens, nuts, fatty fish and whole grains.

What is the CRP level for sepsis? ›

CRP was measured in ICU-admitted patients with systemic inflammatory response syndrome and compared using a cutoff of 50 mg/L with the gold standard for diagnosing sepsis, taken as isolation of organism from a suspected source of infection or the Centers for Disease Control criteria for clinical sepsis.

How high is CRP in inflammation? ›

1.0 to 10.0 mg/dL: Moderate elevation (Systemic inflammation such as RA, SLE, or other autoimmune diseases, malignancies, myocardial infarction, pancreatitis, bronchitis). More than 10.0 mg/dL: Marked elevation (Acute bacterial infections, viral infections, systemic vasculitis, major trauma).

What is the limit of CRP in blood? ›

Although “normal” CRP levels vary from lab to lab, it is generally accepted that a value of 0.8-1.0 mg/dL (or 8-10 mg/L) or lower is normal. Most healthy adults have CRP levels lower than 0.3 mg/dL.

What is the danger level of CRP? ›

A CRP level of less than 1 mg/L is considered low risk for cardiovascular diseases, while levels between 1-3 mg/L indicate moderate risk, and levels above 3 mg/L indicate high risk.

What is the highest CRP level recorded? ›

The highest noninfectious median CRP was recorded in inflammatory bowel disease exacerbation (107 mg/L). Moreover, serum CRP was divided into 5 ranges. Very high CRP >200 mg/L was a marker of sepsis.

How quickly does CRP decrease? ›

After the bacterial trigger for inflammation is eliminated, CRP levels decrease quickly, with a half-life of about 19 hours. Given its physiological behaviour in bacterial infections, CRP use has been proposed to guide initiation and duration of antibiotic therapy.

Is a CRP level of 400 dangerous? ›

Generally, a CRP level of less than 10 mg/L is considered normal. CRP levels between 10 and 100 mg/L indicate mild to moderate inflammation, while levels above 100 mg/L indicate severe inflammation.

What is the treatment for high CRP? ›

Cyclooxygenase inhibitors (aspirin, rofecoxib, celecoxib), platelet aggregation inhibitors (clopidogrel, abciximab), lipid lowering agents (statins, ezetimibe, fenofibrate, niacin, diets), beta-adrenoreceptor antagonists and antioxidants (vitamin E), as well as angiotensin converting enzyme (ACE) inhibitors (ramipril, ...

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