Updated 07 August 2026 · HodieLabs Clinical Governance Lead · The HodieLabs Evidence-Based Clinical Library
A measure of urine concentration reflecting the kidney's ability to concentrate or dilute urine. Useful for assessing hydration status and interpreting other urine results. Specific Gravity (urine) is measured by blood test as part of the Organ panel in the HodieLabs Health Blueprint.
Out-of-range Specific Gravity (urine) is associated with clinically relevant conditions, which is why it is tracked as part of a comprehensive preventative panel.
Associated risks when out of range:.
The HodieLabs Evidence-Based Clinical Library classifies Specific Gravity (urine) 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; urine specific gravity 1.005–1.030 normal. <1.005 may indicate overhydration or impaired concentrating ability; >1.030 may indicate dehydration. Where relevant clinical outcomes are noted on this page, they reflect the guideline literature referenced below.
The HodieLabs Evidence-Based Clinical Library interprets Specific Gravity (urine) against published clinical authority standards, never arbitrary "optimal" ranges. Measured in ratio:
Recommended testing frequency: Annual, as part of a comprehensive panel. Single markers are always interpreted in context.
Specific Gravity (urine) 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.
1. RCPA Australian pathology reference intervals; urine specific gravity 1.005–1.030 normal. <1.005 may indicate overhydration or impaired concentrating ability; >1.030 may indicate dehydration.
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.
A measure of urine concentration reflecting the kidney's ability to concentrate or dilute urine. Useful for assessing hydration status and interpreting other urine results.
The HodieLabs Evidence-Based Clinical Library optimal range is 1.005–1.030 ratio, based on RCPA Australian pathology reference intervals; urine specific gravity 1.005–1.030 normal. <1.005 may indicate overhydration or impaired concentrating ability; >1.030 may indicate dehydration.
Annual testing is recommended for most adults as part of a comprehensive preventative panel; more often if a result is being actively managed.
Management depends on the underlying cause. Interpretation and an action plan should always involve your doctor.
Specific Gravity (urine) is measured in the HodieLabs Health Blueprint at our Melbourne Preventative Health and Longevity Clinic at 85 Spring Street, with doctor-led interpretation against evidence-based reference ranges.
Specific Gravity (urine) and 50+ biomarkers, measured and doctor-interpreted at our Melbourne clinic.