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Age-adjusted D-dimer cut-off

Respiratory & VTE

Over 50, the cut-off rises with age (age × 10 µg/L FEU). Excludes PE safely in more older patients and avoids a third of their CTs.

What you enter

  • Age (years)
  • D-dimer result (µg/L FEU (ng/mL) or mg/L FEU)
FORMULACut-off = age × 10 µg/L FEU if age >50 (otherwise 500)
SourceRighini M et al. Age-adjusted D-dimer cutoff levels to rule out pulmonary embolism: the ADJUST-PE study. JAMA 2014;311:1117-24ReviewedFormula and thresholds checked against the source on 2026-08-22. If the source updates, this line will say so.