---
title: "Fasting Triglyceride-to-HDL-C Ratio Optimal Range vs Lab Normal (2026 Clinical Decoder & Protocol) | Nutrition Research Labs"
source_url: "https://nutritionresearchlabs.com/biomarkers/triglyceride-hdl-ratio"
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description: "Decode your Fasting Triglyceride-to-HDL-C Ratio (TG / HDL Ratio) blood test: Longevity Optimal Target (0.5–1.4 Ratio) vs Standard Lab Normal (0.5–3.5 Ratio), assay interference, and Grade-A clinical protocols."
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> **Canonical Source:** [https://nutritionresearchlabs.com/biomarkers/triglyceride-hdl-ratio](https://nutritionresearchlabs.com/biomarkers/triglyceride-hdl-ratio)
>
> *Decode your Fasting Triglyceride-to-HDL-C Ratio (TG / HDL Ratio) blood test: Longevity Optimal Target (0.5–1.4 Ratio) vs Standard Lab Normal (0.5–3.5 Ratio), assay interference, and Grade-A clinical protocols.*

## Reference Range Comparison (Ratio)

- **Longevity & Metabolic Optimal Range:** 0.5 – 1.4 Ratio
- **Standard Lab Reference Interval ("Normal"):** 0.5 – 3.5 Ratio
- **Why Standard Lab Ranges Mislead Patients:** Most lab panels do not flag the ratio until it exceeds 3.5 or 4.0. Extensive angiography studies demonstrate that an atherogenic particle profile with dense sdLDL dominance emerges once the ratio surpasses 1.5 to 1.8.
- **Pre-Draw Supplement Assay Interference Warning:** Recent high-carbohydrate meals or alcohol consumption within 24 hours of phlebotomy induces transient acute hypertriglyceridemia, significantly inflating the calculated ratio.

## Decode the Next Biomarker on Your Blood Panel

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