hs-CRP — Systemic Inflammation — 60-Second Protocol
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lab guide · 2026-08-27
hs-CRP is the number that tells you whether inflammation is running in the background.
High-sensitivity C-reactive protein measures small rises in CRP, which the liver makes when there is inflammation. Higher levels are linked to a higher risk of heart attack, stroke and heart disease; the AHA classes below 1.0 mg/L as low risk.
The protocol
| Units | mg/L |
| Standard range | AHA cardiovascular-risk categories (per MedlinePlus): < 1.0 low; 1.0–3.0 average; > 3.0 high (ranges vary by lab) |
| Optimal range | < 1.0 (AHA low-risk category, per MedlinePlus) |
| <1 | low risk category (AHA) |
| 1-3 | average risk category (AHA) |
| >3 | high risk category (AHA) |
| any_raised | a cold or hard exercise can raise CRP briefly — the test is done twice, about two weeks apart |
| Acute | repeat about two weeks apart, because a cold or a long run can raise CRP briefly |
| Timing | be tested when you are well |
| Clinician | discuss a raised result with your clinician |
Full transcript
hs-CRP is the number that tells you whether inflammation is running in the background. High-sensitivity C-reactive protein is a non-specific marker of systemic inflammation, and chronically elevated values track with cardiovascular and metabolic risk. Under one milligram per litre is low. One to three is average. Three to ten is elevated. Above ten is an acute process. Because it is non-specific, one reading settles nothing — repeat it in two weeks and take both numbers to a clinician. agegen.ai. Generate your prime age! ~~ Mr. Age
Sources
- https://medlineplus.gov/lab-tests/c-reactive-protein-crp-test/
- https://medlineplus.gov/ency/article/003356.htm
- https://www.health.harvard.edu/heart-health/c-reactive-protein-test-to-screen-for-heart-disease
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