Citrated Plasma More information

Full draw; 1.8 mL in light blue-top (3.2% sodium citrate) tube. Mix well.

24 hrs/day, 7 days a week, including holidays.

1 hour (upon receipt in laboratory)

<0.50 mg/L Fibrinogen Equivalent Units (FEU)

D-dimer units of measurement are mg/L FEU, where FEU = fibrinogen equivalent units. In conjunction with a non-high clinical probability assessment, a D-dimer result below the accepted cut-off (< 0.5 mg/L FEU) excludes deep vein thrombosis and pulmonary embolism with high sensitivity. D-dimer values above the reference range (> 1.14 mg/L FEU) are not specific and may be seen in deep venous thrombosis, pulmonary embolism, disseminated intravascular coagulation, fibrinolysis, recent surgery, active bleeding, hematomas, trauma, pregnancy, liver disease, inflammation, and malignancy.

Updated to Siemens Innovance D-Dimer assay on 7/14/2020

Immunoturbidimetric

Centrifuge within two hours of draw time.
Separate plasma into plastic container and cap (glass is not acceptable).
Centrifuge a second time to ensure platelet poor plasma and separate plasma into a new, labeled plastic tube, cap.

Freeze specimen immediately.

Place labeled specimen into zip-lock type biohazard bag; seal bag.
Place requisition in bag, seal bag, and tape securely to (urine) container.
Place dry ice on top of specimen in Styrofoam container.

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