If You Don’t Know What D-Dimer Is–You Should!

D-Dimer is a quick, non-invasive blood test that measures substance released as a blood clot breaks up.

It is ordered by a physician along with other blood tests, and imaging scans to help rule out the presence of thrombus, abnormal or excess clotting. Frequently seen ordered if MD suspects DVT/PE or something else causing symptoms.

SX include:

  • DVT PE (Pulmonary Embolus)
  • Leg pain, calf tenderness Sudden Shortness of breath
  • Leg swelling/edema Labored breathing
  • Discoloration of the leg Chest pain
  • Rapid heart rate

D-Dimer is recommended as an adjunct test. It should not be the only test used to diagnose a disease or condition.

False positive reading can be due to various causes:

  • Liver diseases
  • Malignancy
  • Recent surgery
  • Pregnancy
  • High Rheumatoid Factors
  • Advanced Age
  • Inflammation
  • Trauma

False Negative can occur if inadequate sample specimen obtained.

2015.03.20.D-Dimer.chart

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