How often are D Dimer blood tests falsely negative?

Decision levels. There is no simple "positive" or "negative" for a D-dimer. A value is reported to a physician and he/she uses this to gauge the likelihood of a thrombus / DIC.

Related Questions

Been ED today 4 chest pain and breathless. Ecg ok. D dimer xray clear and blood tests clear. They dont no what's wrong?? any answer of what it could be?

Possibilities... At your age it can be common to suffer of rib cage pain which can mimic a heart issue.It is completely benign and responds to anti-inflammatory medication. On the other hand anxiety attacks can also present with chest pain symptoms.Respiratory issues like asthma may also resent this way. It all depends on what other symptoms you are having.Follow up with your doctor on this for diagnosis & tx. Read more...

32yo girl, no history of cad, total cholest is 242. Hdl is 65. Went to ER w/chest pains. Ekg, blood tests, d-dimer were all ok. Is that conclusive?

For what? You probably did not have a heart attack, however given your cholesterol level, you are at higher risk, though your high HDL level provides some protection. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex. Read more...

What blood tests will detect coronary heart disease/ heart artery build up? Any tests? Would the d dimer test show?

No lab tests. Coronary artery disease is mainly diagnosed by assessing one's. Cardiovascular risk as well as sorting out various symptoms. Lab tests to help here would be a full lipid panel as well as a CRP which is a marker of inflammation. These do not detect plaque but do help i risk analysis. D-dimmer is used for venous disease ie blood clots in legs or lungs. Read more...
Arteriograpy, Stress. An exercise stress test with ECG monitoring is a great initrial test to check for symptoms like chest pain and signs like st segment changes. The definitive test is coronary arteriography, which can visualize the inside of the arteries and detect atherosclerosis. A d-dimer test shows the presence of fibrin degradation products, indicative of a deep vein thrombosis or pulmonary embolism. Read more...

What blood tests will detect coronary heart disease/ heart artery build up? Any tests? Would the d dimer test show?

None. There are no blood tests that specifically show cad. There are many tests, however, that act as markers for CAD - e.g. Cholesterol, crp. The d dimer is not used for CAD at all. It is a marker for inflammation, including possible thromboembolism. Read more...
Cholesterol. Lab tests do not detect impending heart disease.The risk factors for atherosclerosis and vascular disease could serve as markers of risk for cardiac disease. Elevated cholesterol and ldl, low hdl, increases triglycrides are usual risk factors. Other risk factors that are not lab tests are hypertension, smoking, excessive alcohol intake, lack of physical activity. D-dimer will not help. Read more...

What blood tests will detect coronary heart disease/ heart artery build up? Any tests? Would the d dimer test show?

None. The sad reality is that there's no blood test for atherosclerosis. The d-dimer test most assuredly will not. An ultra sensitive c-reactive protein will address the probability of developing buildup but will not tell you if you have it. Electron beam ct which provides calcium score gets you closer but is not a blood test. Please read my comment:. Read more...
Many tests. An early test would be a stress test with an electrocardiogram or ecg. This is done until there are symptoms and/or st segment changes on ecg, and/or target heart rate is achieved. Thallium 201 imaging makes it more sensitive and specific. The definiitive test is coronary arteriography to see the arteries. A d-dimer test checks for fibrin degradation products for deep vein/lung (pe)thrombosis. Read more...