Question

A 67-year-old low/intermediate risk patient for PE has a D-dimer of 580 ng/mL FEU; his age is 67. Using age-adjusted D-dimer, is this elevated?

Accepted Answer

No; cutoff is 670 ng/mL (age ×10) for FEU

Answer

Yes; cutoff is 500 ng/mL for all ages

Answer

Yes; cutoff is 400 ng/mL for age >65

Answer

No; cutoff is age ×5

Answer

Cannot use age-adjustment in FEU units

Practice question

A 67-year-old low/intermediate risk patient for PE has a D-dimer of 580 ng/mL FEU; his age is 67. Using age-adjusted D-dimer, is this elevated?