D-Dimer (Quantitative)

Profile or Test Panel
Method Turbidometric
Test Information D-dimer is a specific degradation product of factor XIII-crosslinked fibrin. A monoclonal antibody that recognizes cross-linked D-dimer fragments is used in a semi-quantitative latex agglutination assay. The D-dimer assay is more specific for fibrin degradation than the FDP assay, which detects degradation products of both soluble fibrinogen as well as crosslinked fibrin. D-dimer levels can be elevated in disseminated intravascular coagulation (DIC), liver disease, or venous thromboembolic disease. The presence of rheumatoid factor can result in a false positive D-dimer.
Sample Requirements Whole Blood:  3.2% Sodium Citrated (blue top)  OR
Frozen Plasma
Requested Volume Two 5 ml 3.2 sodium citrated (blue top) tubes as whole blood  OR
Frozen plasma in 4 X 1mL aliquots in plastic tubes  
Minimum Volume or Pediatric volume Frozen Plasma:  at least 0.5ml in 2 plastic tubes.  
Sample Information Whole blood is preferred for testing but if it is not possible to send whole blood tubes TO ARRIVE HERE WITHIN 3 HOURS of collection then send frozen plasma. To prepare plasma centrifuge blue top tubes at 1500g for 15 minutes and remove the plasma and centrifuge a second time at 1500g for an additional 15 minutes.  Aliquot approximately 1 ml of plasma into 4 plastic tubes, and freeze.  
Shipping Information Whole Blood:  Send at ambient temperature (18-25C) and must be received within the lab in less than or equal to 3 hours after collection.
Frozen Plasma:  send on dry ice 

Send samples to:

Bloodworks Northwest
Attn: Hemostasis Laboratory
921 Terry Ave
Seattle, WA 98104

For additional information, please see Ordering Information
Requisition Form RFT- Hemostasis Reference Laboratory
Transaction Code 3210-07
CPT Codes 85378
Test Schedule Monday - Friday 
Turn around Time (analytic time) 5 Business Days
Report/ Results Fax number required to receive report