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D-Dimer
MessageTest performed at York Hospital Laboratory.
Test Code
DD
CPT Codes
85379
Preferred Specimen
Whole blood collected in a 3.2% sodium citrate (light blue-top) tube NOTE: This tube can also be used for in-house PT, PTT, and/or Fibrinogen testing.
Other Acceptable Specimens
0.5 mL platelet-poor plasma collected in a 3.2% sodium citrate (light blue-top) tube, transferred to a plastic screw-cap vial
Instructions
Draw blood into light blue-top tube, filling tube to mark indicated on the tube. Do not overfill.
Transport Temperature
Frozen
Specimen Stability
Room temperature: 8 hours Refrigerated: Not recommended Frozen (plasma): 1 month Frozen (whole blood): unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolyzed specimen
Refrigerated specimen
Refrigerated specimen
Methodology
Spectrophotometric
Setup Schedule
Daily
Report Available
Same Day Available STAT 1 Hour
Reference Range
0.22 - 0.50 mcg/mL
Clinical Significance
D-Dimer is one of the measurable by-products of activation of the fibrinolytic system. Quantitation of D-Dimer assesses fibrinolytic activation and intravascular thrombosis. D-Dimer is of particular value in excluding the diagnosis of venous thromboembolism among patients of high risk.
