Age-Adjusted D-dimer for Venous Thromboembolism (VTE)
If age ≥50 years, adjusted threshold = age × 10 ng/mL FEU; if age <50, conventional 500 ng/mL FEU teaching threshold.
Calculadora
Como funciona
Age-adjusted D-dimer reduces false positives in older adults while maintaining sensitivity for VTE exclusion pathways.
Limites
Assumes FEU units; pregnancy, inflammation, and malignancy elevate D-dimer; use institutional assay cutoffs.
Educational tool only—not for diagnosis or treatment decisions.