---
title: "High-Sensitivity C-Reactive Protein (hs-CRP) Optimal Range vs Lab Normal (2026 Clinical Decoder & Protocol) | Nutrition Research Labs"
source_url: "https://nutritionresearchlabs.com/biomarkers/hs-crp"
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description: "Decode your High-Sensitivity C-Reactive Protein (hs-CRP) (hs-CRP) blood test: Longevity Optimal Target (0.1–0.7 mg/L) vs Standard Lab Normal (0.0–3.0 mg/L), assay interference, and Grade-A clinical protocols."
rfc_compliance: "RFC 9110 / RFC 9309 / RFC 9421"
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---

> **Canonical Source:** [https://nutritionresearchlabs.com/biomarkers/hs-crp](https://nutritionresearchlabs.com/biomarkers/hs-crp)
>
> *Decode your High-Sensitivity C-Reactive Protein (hs-CRP) (hs-CRP) blood test: Longevity Optimal Target (0.1–0.7 mg/L) vs Standard Lab Normal (0.0–3.0 mg/L), assay interference, and Grade-A clinical protocols.*

## Reference Range Comparison (mg/L)

- **Longevity & Metabolic Optimal Range:** 0.1 – 0.7 mg/L
- **Standard Lab Reference Interval ("Normal"):** 0.0 – 3.0 mg/L
- **Why Standard Lab Ranges Mislead Patients:** Standard clinical cutoffs categorize 1.0 to 3.0 mg/L as
- **Pre-Draw Supplement Assay Interference Warning:** Recent acute viral or bacterial infections, dental work, minor trauma, or strenuous unaccustomed weightlifting within 48 to 72 hours can spike hs-CRP above 10 mg/L, obscuring chronic baseline vascular inflammation.

## Decode the Next Biomarker on Your Blood Panel

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