U.S. doctors online nowAsk doctors free
A 27-year-old female asked:

Does a negative d dimer rule out a dvt and pe? been having chest and calf pain, but er dr said that i didn't need any more tests since it was negative

2 doctor answers4 doctors weighed in
Dr. Saptarshi Bandyopadhyay
Hospital-based practice 23 years experience
99.5% of time, nothi: The D-Dimer, if negative, does a fairly good job of ruling out DVT/PE, but isn't absolute (no test is absolute 4 everything). 99.5% of the time a neg D-Dimer means no DVT/PE. (But 1 out of 200+ times it could be falsely reassuring). Not knowing ur specific condition, it's reasonable to look elsewhere 4 the cause of ur symptoms (chest, calf pain) w/ other tests perhaps. TTY regular doc about it.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Mark Dickson
General Surgery 25 years experience
Essentially yes: A D-dimer can have a lot of false positive results, but few false negatives. Someone who doesn't have any other risk factors for a blood clot, such as obesity, cancer, a blood clotting disorder (called a hypercoagulable state), or others, may not need another test. Someone who has worrisome risk factors or exam may warrant one, such as an ultrasound of the leg veins or a CT of the chest.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated May 23, 2015


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.