Question

A 48-year-old with suspected PE has intermediate pretest probability. Which is correct regarding D-dimer?

Accepted Answer

Negative D-dimer can exclude PE in low/intermediate PTP

Answer

High-specificity assays render imaging unnecessary at any probability

Answer

Negative D-dimer rules out PE even with high PTP

Answer

D-dimer is useless in patients <50 years

Answer

Positive D-dimer confirms PE

Practice question

A 48-year-old with suspected PE has intermediate pretest probability. Which is correct regarding D-dimer?