Urea: what your result means.

A waste product from protein metabolism; reflects kidney function and hydration. Urea is measured by blood test as part of the Organ panel in the HodieLabs Health Blueprint.

Why Urea matters

Elevated by high protein intake, dehydration, GI bleeding, and catabolic states, not specific to kidney disease. BUN/creatinine ratio helps distinguish pre-renal (dehydration) from intrinsic kidney disease.

Associated risks when out of range: Dehydration/protein load (high). Kidney dysfunction (contextual).

Evidence basis

The HodieLabs Evidence-Based Clinical Library classifies Urea as an strong evidence-tier biomarker. Its reference ranges come from a published authority standard rather than from observational optimisation targets. The standard used here is RCPA Australian pathology reference intervals; serum urea 3.0–8.0 mmol/L normal for adults. Where relevant clinical outcomes are noted on this page, they reflect the guideline literature referenced below.

Evidence-based reference ranges

The HodieLabs Evidence-Based Clinical Library interprets Urea against published clinical authority standards, never arbitrary "optimal" ranges. Measured in mmol/L:

Clinical interpretation

• Elevated by high protein intake, dehydration, GI bleeding, and catabolic states, not specific to kidney disease.
• BUN/creatinine ratio helps distinguish pre-renal (dehydration) from intrinsic kidney disease.
• Interpret alongside eGFR and creatinine for a complete renal picture.

What improves it: the evidence-based levers

• Hydration optimisation
• Review protein intake if very high
• Clinical review with creatinine/eGFR

Recommended testing frequency: Annual, as part of a comprehensive panel. Single markers are always interpreted in context.

How Urea testing works at HodieLabs

Urea is measured in every Health Blueprint at our Melbourne Preventative Health & Longevity Clinic, interpreted by a doctor against the guideline-cited ranges above and tracked over time through your HodieLabs membership.

References

1. RCPA Australian pathology reference intervals; serum urea 3.0–8.0 mmol/L normal for adults.

This page is general information from the HodieLabs Evidence-Based Clinical Library, not medical advice. Speak with your GP about what testing and care is appropriate for you.