CRP (C-reactive protein) Blood Test

CRP is the most accessible measure of systemic inflammation in your body — a low-key but powerful health signal.

What CRP measures

C-reactive protein (CRP) is produced by the liver in response to inflammation. The high-sensitivity CRP test (hs-CRP) measures small amounts and is commonly used to assess cardiovascular risk and chronic low-grade inflammation, on top of acute infection or injury responses.

Who should consider checking CRP

Have you noticed any of these:

• family history of heart attack or stroke
• interest in tracking the inflammation side of cardiovascular risk
• an active longevity or training focus
• chronic conditions where inflammation matters (e.g. autoimmune)
• tracking the impact of diet, exercise or supplements
• checked it before and want to see how it's tracking

How the test works

Single blood draw, no fasting required. Avoid testing within a few days of an infection, vaccination, or significant injury — those will temporarily raise CRP. Results back same day.

What "normal" can look like

Most labs report CRP in mg/L. For cardiovascular risk, low risk is generally discussed as below 1, average 1–3, higher above 3. But CRP is non-specific — it goes up with anything from a cold to a hard workout to chronic disease. Patterns over multiple readings are more useful than any single number. Always interpret with your doctor.

Where to get a CRP test

CRP is included in these panels:

• Cardiovascular Risk Panel — Beyond standard cholesterol — the advanced cardiovascular markers most GPs don't routinely check. $269
• Core Health Panel — The full check — 42 biomarkers across 8 health areas, in one blood test. Our most comprehensive panel. $249

Frequently asked questions

Why might my CRP be temporarily high?

CRP rises with any inflammation — colds, dental issues, hard exercise within 48 hours, recent injury or vaccination. If it's unexpectedly high, retest in 2–4 weeks once any obvious trigger has passed.

Should I fast?

No fasting required for CRP.

Is high CRP a heart disease diagnosis?

No. Elevated CRP is a risk signal, not a diagnosis. Combine with other cardiovascular markers (ApoB, lipoprotein(a), traditional lipids) for a fuller picture, and discuss with your doctor.