C-Reactive Protein— Normal Range & What Your Result Means

Inflammation marker

Normal C-Reactive Protein range (CRP, mg/L)

  • Adults0–5 mg/L

Ranges are typical adult values and vary between labs. Use the range on your own report.

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What is C-Reactive Protein (CRP)?

C-Reactive Protein is measured as part of a cardiac panel. Your CRP is normal — no significant inflammation detected.

What does a high C-Reactive Protein mean?

Elevated CRP indicates inflammation somewhere in your body. It's a non-specific marker — can be caused by infection, autoimmune conditions, injury, or chronic disease. Your doctor will look for the source.

If markedly elevated: Very high CRP indicates significant inflammation or acute infection. Requires medical evaluation.

Understand your whole report, not just one number

A single value rarely tells the full story — C-Reactive Protein is best read alongside the rest of your panel. Paste your values or upload your report and get a plain-English explanation of every marker, with the important results flagged.

C-Reactive Protein: frequently asked questions

What is a normal C-Reactive Protein level?

A normal C-Reactive Protein (CRP) level is 0–5 mg/L for adults. Reference ranges vary slightly between laboratories, so always compare against the range printed on your own report.

What does a high C-Reactive Protein mean?

Elevated CRP indicates inflammation somewhere in your body. It's a non-specific marker — can be caused by infection, autoimmune conditions, injury, or chronic disease. Your doctor will look for the source.

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