Can a D Dimer test rule out a PE.

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So for the past couple of weeks ive been having shortness of breath and pain when deep breathing.Also occasionally spit blood.

I did all the tests at the hospital but i the heaviness is just getting worse

I think i might have a Blood Clot.

My left calf have been sore for weeks so my doctor suggested a D dimer but can it rule out a PE?

What if the clot in my leg has all gone up to my lungs ?

Can it show that i have PE?

very worried.

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    ?Yes a D dimer can indicate to a doctor that there is a clot present, although it is not a 100% accurate test, by that I mean other things can also raise it and doctors are mindful of this. 

    ?My suggestion is to get to an emergency department immediately for treatment if you are coughing up blood and chest pain, they can then do the D dimer blood test and also order a contrast dye CT Scan of the lungs. these tests will tell you in combination, especially the contrast dye CT scan if you definatlely  100%  have a PE. Pulmonary embolisms can be and are fatal if left untreated.

    ?That's how my PE was found, my left calf muscle was extremely sore, as if I had pulled/strained a muscle, it wasn't sore to the touch but to walk on definitely was, it puffed up, it got really red and hot, I presented to our emergency with my normal angina chest pain, the triage nurse this time was actually more worried about my leg than my chest pain, the tests were done and they found blood clots, multiple, in both lungs, they had broken off and travelled to my lungs, they don't always travel to the lungs, they can get to the heart or the brain, pretty well much anywhere they can lodge themselves in the body.

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