LDH: what your result means.

An enzyme released from damaged cells; a broad marker of tissue injury. LDH is measured by blood test as part of the Organ panel in the HodieLabs Health Blueprint.

Why LDH matters

Non-specific; use as context marker. Interpret using the reporting lab’s reference interval and clinical context; trend over time is often more informative than a single value.

Associated risks when out of range: Highly non-specific, elevated in haemolysis, tissue damage, malignancy, and intense exercise. Persistently elevated LDH without clear cause warrants malignancy screening.

Evidence basis

The HodieLabs Evidence-Based Clinical Library classifies LDH 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; LDH 120–250 U/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 LDH against published clinical authority standards, never arbitrary "optimal" ranges. Measured in U/L:

Clinical interpretation

• Non-specific; use as context marker.
• Interpret using the reporting lab’s reference interval and clinical context; trend over time is often more informative than a single value.

What improves it: the evidence-based levers

• Fractionate with LDH isoenzymes if source is unclear (heart, liver, muscle, RBC, lymphoid)
• Check reticulocyte count and haptoglobin if haemolysis is suspected

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

How LDH testing works at HodieLabs

LDH 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; LDH 120–250 U/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.