Question

A 59-year-old woman with suspected DVT has low pretest probability and D‑dimer 270 ng/mL DDU (age 59). What is the interpretation using age‑adjusted D‑dimer?

Accepted Answer

Negative because < age × 5 DDU (295)

Answer

Positive; proceed to ultrasound

Answer

Negative because < age × 10 DDU (590)

Answer

Indeterminate; repeat D‑dimer

Answer

Not applicable to DDU units

Practice question

A 59-year-old woman with suspected DVT has low pretest probability and D‑dimer 270 ng/mL DDU (age 59). What is the interpretation using age‑adjusted D‑dimer?