Is CRP 5.71 high, normal or dangerous? What does C Reactive Protein level 5.71 mean?

📅 Medical Review Date: October 31, 2025

Your CRP level of 5.71 is a High CRP level.

High CRP levels may indicate underlying health problems. The normal range is typically between 0.1 mg/L and 3 mg/L. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

The normal CRP range for men is :0.1 - 3 mg/L

Ideal values of CRP depending on age (male) :

Age	Ideal CRP value
<5 years	0.106
5-10 years	0.112
10-15 years	0.118
15-20 years	0.125
20-25 years	0.132
25-30 years	0.14
30-35 years	0.148
35-40 years	0.156
40-45 years	0.165
45-50 years	0.174
50-55 years	0.184
55-60 years	0.195
60-70 years	0.206
70-80 years	0.218
80-90 years	0.23
90-100 years	0.243
>100 years	0.257

*Ideal values are calculated based on our database of patient records

Get Advice via Email : Send us your blood test report, and our CRP experts will review it. You'll receive a detailed analysis and personalized treatment guidance via email within 12 hours. If you have additional blood test results besides CRP, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

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If you want your blood test report to be interpreted by CRP specialist, you can upload your report. Our CRP expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours.Upload blood test report now

Some examples of conditions that increase or decrease CRP levels include:

• Inflammation
• Suspected bacterial infection
• Lupus
• Crohn disease
• Ulcerative colitis

Receive world-class medical opinion about your high CRP levels over email.Upload blood test report now

Normal range of CRP found among women :0.1-3 mg/L

Ideal values of CRP depending on age (female) :

Age	Ideal CRP value
<5 years	0.106
5-10 years	0.112
10-15 years	0.119
15-20 years	0.126
20-25 years	0.133
25-30 years	0.141
30-35 years	0.149
35-40 years	0.158
40-45 years	0.167
45-50 years	0.177
50-55 years	0.187
55-60 years	0.198
60-70 years	0.21
70-80 years	0.222
80-90 years	0.235
90-100 years	0.249
>100 years	0.264

If you take a CRP blood test and the results are not in the normal range (0.1-3 mg/L), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the CRP Test Is Done :

When your doctor orders a CRP test, it involves a straightforward blood draw to measure your CRP levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your CRP test results are usually available within a few hours.

Medical References

• MedlinePlus – C-Reactive Protein (CRP) Test
• Mayo Clinic – C-reactive protein test
• Cleveland Clinic – C-Reactive Protein (CRP) Test: What It Is, Purpose & Results