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D-Dimer Quantitative : 8659
Test CodeDDIM or 8659
CPT Codes
85379
Transport Container
Whole blood: Collect one full light blue‐top tube (3.2% sodium citrate). Tubes must be filled to within +/‐ 10% of the fill line. Do not centrifuge. Do not refrigerate. Transport at room temperature.
Frozen plasma: Collect one full light blue‐top tube (3.2% sodium citrate). Centrifuge specimen for 15 minutes at 2500‐3500 rpm to obtain platelet‐poor plasma (<10,000/μL). Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet (buffy) layer, and place into a plastic transport tube. Freeze at ≤ ‐20°C. Ship on dry ice. Required volume 1 mL, minimum 0.5 mL.
Frozen plasma: Collect one full light blue‐top tube (3.2% sodium citrate). Centrifuge specimen for 15 minutes at 2500‐3500 rpm to obtain platelet‐poor plasma (<10,000/μL). Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet (buffy) layer, and place into a plastic transport tube. Freeze at ≤ ‐20°C. Ship on dry ice. Required volume 1 mL, minimum 0.5 mL.
Transport Temperature
Whole blood: Room temperature
Platelet‐poor plasma: Frozen
Platelet‐poor plasma: Frozen
Specimen Stability
Unopened light blue‐top tube, whole blood: Room temperature 72 hours, Refrigerated: 24 hours, Frozen: Unacceptable
Platelet‐poor plasma: Room temperature: Unacceptable, Refrigerated: Unacceptable, Frozen: 30 days
Platelet‐poor plasma: Room temperature: Unacceptable, Refrigerated: Unacceptable, Frozen: 30 days
Methodology
Immunoturbidimetric
Setup Schedule
Sunday -Saturday
Report Available
1 day
Reference Range
<0.50 mcg/mL Fibrinogen Equivalent Units (FEU)
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 at high risk.
Performing Laboratory
med fusion
