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Test Code DDIMR D-Dimer, Quantitative [LAB2810]

Test Method

Turbidimetric Immunoassay; Diagnostica Stago

Performance

Testing is performed Monday through Sunday.

Routine: Typically completed within 4 hours upon receipt in the lab.

STAT: Typically completed within 30 minutes upon receipt in the lab.

Specimen Requirement

  1. Sodium citrate blue-top tube filled to the area within the indicator arrow printed on the side of the tube.
    Important: Underfilled and overfilled tubes will be rejected.
  2. Transport tube to the lab as soon as possible. Tubes should be spun within one hour of collection and tested within 24 hours of collection.
  3. Never refrigerate specimens for d-dimer testing.
  4. If the specimen cannot be sent to the lab immediately, spin down and remove plasma from the cells and freeze to at least -20C. The specimen must then remain frozen during transport to the lab.
  5. Blood collection using a butterfly needle is not recommended. If using a winged butterfly setup, collect a "discard tube" first to account for the dead space in the butterfly tubing. 
  6. Do not "force fill" into a vacutainer tube.
  7. Do not remove the cap of a blue top citrate tube.

Useful For

Diagnosis of intravascular coagulation and fibrinolysis, also known as disseminated intravascular coagulation, especially when combined with clinical information and other laboratory test data
(eg, platelet count, assays of clottable fibrinogen and soluble fibrin monomer complex, and clotting time assays-prothrombin time and activated partial thromboplastin time).

Excluding the diagnosis of acute pulmonary embolism or deep vein thrombosis, particularly when results of a sensitive D-dimer assay are combined with clinical information, including pretest disease probability.

Reference Values

< 0.5 ug/mL Fibrinogen Equivelant Units (FEU)

The D-Dimer cutoff value to use for exclusion of DVT (deep vein thrombosis) and/or PE (pulmonary embolism) is 0.5 ug/dL..

CPT Code Information

85380 Coagulopathy Testing: Fibrin degradation products,
D-dimer; ultrasensitive, qualitative or semiquantitative