Biomarkershs-CRP

Heart & inflammation

hs-CRP

A sensitive marker of inflammation and heart risk

On your report it may say: High-sensitivity C-reactive protein

CRP is made by the liver when there's inflammation. The high-sensitivity test picks up low-grade inflammation linked to heart disease risk.

Updated 2026-10-26

Typical ranges · mg/L

Lower risk below 1
Average risk 1–3
Higher risk 3–10
Likely acute inflammation 10+

Above 10 mg/L usually means a recent infection or injury; retest when you're well.

Ranges vary by lab, age and sex. The range printed on your report applies.

If it's low

Little low-grade inflammation.

Common causes

  • Healthy lifestyle

If it's high

Ongoing inflammation that can add to heart risk.

Common causes

  • Infection or injury
  • Excess weight
  • Smoking
  • Poor sleep
  • Autoimmune conditions

What you might notice

  • Depends on the cause

Testing

Who should test
People assessing heart risk, especially with borderline cholesterol.
How to prepare
Test when you're free of colds or injuries for 2 weeks.
When to retest
Average two results taken 2 weeks apart.

What can help

SYNC doesn't change your plan from this result alone. Use these only alongside your doctor's advice.

Food sources

Vegetables and fruitOily fishNutsFewer processed foods

See a doctor if it's above 10 without an obvious cause.

Common questions

Is hs-CRP the same as CRP?

Same protein; hs-CRP measures lower levels more precisely.

Why did a cold raise it?

Any infection raises CRP for a while.

Explore further

Sources

  1. MedlinePlus (US National Library of Medicine): C-reactive protein (CRP) test

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For general education only, not medical advice. Ranges shown are typical for adults; the range printed on your lab report applies. Talk to a qualified doctor about your results.