Does a normal D dimer rule out an intracranial venous thrombosis in neurologically-intact acute headache patients?

Date First Published:
August 12, 2010
Last Updated:
August 12, 2010
Report by:
Rory Whelan, Registrar in emergency medicine (St Vincent's University Hospital)
Search checked by:
Rory Whelan / Sam Kuan, St Vincent's University Hospital
Three-Part Question:
In [adults with headache <1 month duration presenting to the emergency department in whom intracranial venous thrombosis is suspected] is [a negative D dimer] sufficient [to rule out intracranial venous thrombosis]?