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Doctor insights on: D Dimer

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D Dimer (Overview)

D-diner is a breakdown product from blood clots. It can be found elevated in certain conditions like pulmonary embolus (blood clot which travels to the lung) deep venous thrombosis (blood clot in deep vein of legs usually) and disseminated intravascular coagulation (diffuse clot formation from severe infection which actually leads to bleeding).


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What is a ?D-dimer test?

What is a ?D-dimer test?

Thrombosis: The d-dimer is a fibrin degradation product (or fdp) which represents a small protein fragment in blood after a blood clot is broken down. The value can be used to test for clotting or thrombosis problems. However, a single value or a value in isolation should not be used. ...Read more

D Dimer (Overview)

D-diner is a breakdown product from blood clots. It can be found elevated in certain conditions like pulmonary embolus (blood clot which travels to the lung) deep venous thrombosis (blood clot in deep vein of legs usually) and disseminated intravascular coagulation (diffuse clot formation from severe infection which actually leads to bleeding).


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What could cause abnormal d dimer result?

What could cause abnormal d dimer result?

High d-dimer: High d-dimer results can occur because of essentially inflammatory process. Besides blood clots, high results can be due to various causes: liver disease, high rheumatoid factor, inflammation, malignancy, trauma, pregnancy, recent surgery, and advanced age, to name a few. A high d-dimner is very non-specific. A low d-dimer is very help[ful in ruling out blood clots. ...Read more

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Can you tell me in january, they done just a CT scan on my lungs and showed nothing and sent me home. I had accurate is the d-dimer for clots?

Can you tell me in january, they done just a CT scan on my lungs and showed nothing and sent me home. I had accurate is the d-dimer for clots?

Not accurate : A negative d dimer is helpful for ruling out pulmonary clots. A positive d dimer is basically useless as it can occur from a variety of reasons. A CT angiogram is close to the gold standard for determining whether there are clots in lungs. Regardless of what the d dimer showed, if the CT was negative and they used contrast for the CT then you are in the clear. ...Read more

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Purpose of a d-dimer test?

Clotting disorders: D-dimer is a small protein fragment present in the blood after a blood clot is broken down by the naturally occurring process of clot breakdown, called fibrinolysis. D-dimer levels are determined by blood tests and elevations can be seen in conditions of blood clots, such as with deep vein thrombosis, with severe infections and with advanced liver disease (which normally clears d-dimer). ...Read more

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I have had 2 normal d dimer tests in the past 2 weeks. Is it safe to assume i don't have a blood clot, even if my leg is sore?

Look at risk: You have to ask the reason why the d dimer is being done. In all likelihood, there is no blood clot as the work up is negative. Like a previous question, the risk and presentation has to be evaluated first and then a study is done to work it up. I don't know why the test was done, but in all likelihood the importance of a negative test is more to point negative but positive test is more a problem. ...Read more

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Can having an elevated d dimer be dangerous?

Can having an elevated d dimer be dangerous?

Perhaps: The d-dimer is a fibrin degradation product (or fdp) which represents a small protein fragment in blood after a blood clot is broken down. The value can be used to test for clotting or thrombosis problems. However, a single value or a value in isolation should not be used. Elevations may suggest a clotting problem. ...Read more

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Small lump near where ankle and calf meet. Left leg/left side. Leg hurts. D-dimer normal yesterday. 3 u/s in the past. Dr says no clot. Wat culd it b?

Small lump near where ankle and calf meet.  Left leg/left side. Leg hurts. D-dimer normal yesterday. 3 u/s in the past. Dr says no clot. Wat culd it b?

Cyst: This is very likely a benign cyst which is a collection of fluid or solid material. If it does not hurts or change in size i would just keep an eye on it. If it does bother you see you in orthopedic surgeon and they can easily take it out. ...Read more

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Does a normal result for the d-dimer blood test mean I don't have an abdominal aneurysm?

Does a normal result for the d-dimer blood test mean I don't have an abdominal aneurysm?

No: The way to know if you have an abdominal aoritc aneurysm or not is to get an abdominal ultrasound. A single d-dimers is not helpful. If you have a normal d-dimer it means you proabbly don't have a blood clot anywhere. ...Read more

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What can an elevated d dimer mean when CT scan stress test and echo were all normal but I still feel ill and tired?

What can an elevated d dimer mean when CT scan stress test and echo were all normal but I still feel ill and tired?

Inflammation: D-dimer is more useful when negative, as a negative test more or less rules out thrombo-embolism. There are many causes for elevated d-dimer, including inflammation. ...Read more

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If I have a negative D dimer, what does this mean?

D-dimer: D-dimer is tested in the blood when there is a concern for a blood clot. As blood clots in the body begin to breakdown, certain proteins are released, resulting in a positive D-Dimer test. A negative D-Dimer test is suggestive that a blood clot is not present. ...Read more

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Is 278 mg/nl considered a high d dimer?

Possibly: Unfortunately, the answer depends on the specific method used by that particular laboratory. Different labs use different d-dimer tests and each lab has its own range of normal values. It is important to discuss the results of the test with the doctor who ordered it ...Read more

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Please answer! what does a low d-dimer by high fibrinogen mean?

Clots coming ; going: D-dimer is increased with breakdown of clots to crosslinked fibrin. Fibrinogen forms fibrin whose fibers become crosslinked to form a clot. So high fibrinogen infers clot formation, not breakdown, so d-dimer is inferred to be low. ...Read more

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Normal d dimer a month ago. Last four days I have had gurgling and weakness in my left leg. It is not a spasam, could it me a clot. 19 yomale?

Normal d dimer a month ago.  Last four days I have had gurgling and weakness in my left leg. It is not a spasam, could it me a clot. 19 yomale?

Not sure: Thrombophlebitis usually doesn't cause weakness. However, you should have an exam to determine the cause of your symptoms. Clots are less common in your age group, but an exam is necessary to exclude other possibilities. ...Read more

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What is a ?D-dimer test?

Thrombosis: The d-dimer is a fibrin degradation product (or fdp) which represents a small protein fragment in blood after a blood clot is broken down. The value can be used to test for clotting or thrombosis problems. However, a single value or a value in isolation should not be used. ...Read more

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Purpose of a d-dimer test?

Clotting disorders: D-dimer is a small protein fragment present in the blood after a blood clot is broken down by the naturally occurring process of clot breakdown, called fibrinolysis. D-dimer levels are determined by blood tests and elevations can be seen in conditions of blood clots, such as with deep vein thrombosis, with severe infections and with advanced liver disease (which normally clears d-dimer). ...Read more

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D dimer--how effective is this test?

D dimer--how effective is this test?

Efficacy of d-dimer: That is actually a hard question to answer. There are different testing methods and some d-dimer tests are more reliable than others. If you have a low probability of having a blood clot by history and a low d-dimer, it is pretty safe to say that you don't have a blood clot. If you have a high d-dimer and a high probabilty of a blood clot by history, then your risk of a clot is high. ...Read more

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Is less than .19 D-Dimer result good?

Reference Ranges: The answer depends on the units and the reference range in use. Labs are expected to establish the reference range of normal expected values for the population of patients they serve. With d-dimer, one is primarily interested in elevated levels that would suggest some activity in the clotting mechanisms of the body. ...Read more

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Is 278 mg/nl considered a high d dimer?

Possibly: Unfortunately, the answer depends on the specific method used by that particular laboratory. Different labs use different d-dimer tests and each lab has its own range of normal values. It is important to discuss the results of the test with the doctor who ordered it ...Read more

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What could cause abnormal d dimer result?

High d-dimer: High d-dimer results can occur because of essentially inflammatory process. Besides blood clots, high results can be due to various causes: liver disease, high rheumatoid factor, inflammation, malignancy, trauma, pregnancy, recent surgery, and advanced age, to name a few. A high d-dimner is very non-specific. A low d-dimer is very help[ful in ruling out blood clots. ...Read more

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How sensitive is d dimer negative at 178 ?

D dimer: If your d dimer is negative, the likelihood of a clot is low. If you are having symptoms of shortness of breath or leg swelling/pain, then get in for further evaluation. ...Read more

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What does a high d-dimer quant count mean?

Depends on disease: D-dimer is usually not requested unless there is a work up to do to establish the yes or no diagnosis of DVT or pe (clots in leg or arm) or dic in sepsis. It should not be used to make an unknown diagnosis as it can be elevated in many inflammatory conditions. In the above clots or dic if elevated it helps point to a yes diagnosis, then full work up still has to be done. It gives reason to proceed. ...Read more

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D dimer result 78 cut off 250 is this good ?

See answer : D-dimer assay, combined with clinical information, including pretest disease probability) is primarily used to help determine the possibility of either deep venous thrombosis/DVT (blood clot in the leg) or acute pulmonary embolism/PE (blood clot traveled to the lungs). Normal D-dimer values <250 ng/mL excludes DVT/PE with 95% accuracy when there is low or moderate pretest probability of DVT/PE. ...Read more

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Can having an elevated d dimer be dangerous?

Perhaps: The d-dimer is a fibrin degradation product (or fdp) which represents a small protein fragment in blood after a blood clot is broken down. The value can be used to test for clotting or thrombosis problems. However, a single value or a value in isolation should not be used. Elevations may suggest a clotting problem. ...Read more

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D-dimer results higher when sick with a cold?

Depends: D dimer goes up in blood clots anywhere and in inflammation. Simple cold unlikely will do it, but cold is used so loosely that other inflammatory problems can be the cause. ...Read more

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What is a common cause of high d dimer levels?

Lots of things: The d-dimer test will be elevated in many conditions where the blood is making and dissolving blood clots. We use it to detect abnormal clots in the leg or lungs but unfortunately the test is often abnormal after surgery or trauma, in pregnancy and many other illnesses. This makes it a difficult test to interpret and use. In the right patient, a normal test can be very useful. ...Read more

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What does it mean to have a high d-dimer level?

Suspect PE: A high level may indicate you have had a pe tho not necesarily acute. Sising levels mean you have one now. ...Read more

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D-dimer test results over 1000, even 1500.?????

D-dimer test: D-dimer uses antibodies to detect certain portions of the fibrinogen molecule that has been cross-linked, indicating that it was part of a clot. When elevated it means that two things have happened- clot formation, and at least the beginnings of clot break-up (lysis.) But it doesn't tell one where the clot came from or may have gone. Also, after surgery, #s can be high, so clinical setting matters ...Read more