D Dimer, Citrated plasma

D-Dimer, Citrated Plasma

Test Name: D-Dimer
Sample Type: Citrated Plasma
Department: Clinical Pathology / Hematology

About the Test

D-Dimer is a blood test that measures a protein fragment produced when a blood clot is broken down in the body. It is commonly used as an aid in assessing active clot formation and breakdown.

Clinical Uses

• Helps evaluate suspected deep vein thrombosis (DVT)
• Helps assess suspected pulmonary embolism (PE)
• Supports evaluation of abnormal blood clotting
• May be used as part of the assessment for disseminated intravascular coagulation (DIC)
• Helps rule out significant thromboembolism in appropriate patients when interpreted with clinical assessment

Specimen

• Sample: Citrated plasma
• Collection tube: Sodium citrate (light-blue top)
• Proper blood-to-anticoagulant ratio is essential for reliable results.

Patient Preparation

No special fasting is generally required. Inform the healthcare provider about medications and any ongoing medical conditions.

Interpretation

D-Dimer results should not be interpreted in isolation. Elevated levels can occur with thrombosis but may also be seen with infection, inflammation, pregnancy, recent surgery or trauma, liver disease, malignancy, and increasing age.

Note: Reference ranges and reporting units may vary by laboratory. Results should be interpreted by a qualified healthcare professional in conjunction with clinical findings.