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HelpTest Code DDIMHS D-Dimer Sensitive Quantitative, LAB2810
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube:
Preferred: Full blue-top (sodium citrate) 1.8mL tube-Hemolyzed or short draw specimen in not acceptable.
Specimen Volume:100 µL of sodium citrate
plasma
Stability: Specimens are stable at
18-24°C when stored in primary tube and tested within 24
hours of collection. Plasma may remain in primary tube but
centrifugation is recommended.
Transport: Specimens may remain in the primary tube unspun if testing will be completed the same day.
Collection Instructions: Centrifuge immediately after draw if not forwarded promptly. If there is a delay in transport of >24 hours, spin down, remove plasma from cells and freeze immediately in plastic vial. Send specimen frozen. Specimen stability is 2 weeks when frozen at ≤-20° C.
NOTE: Patient should not be on heparin or Coumadin.
NOTE: Patients with a hematocrit of >55% must be recollected using an altered amount of sodium citrate.
Reference Values
0 - 500 ng/mL FEU
Values less than or equal to 500 ng/mL FEU indicate that deep vein thrombosis (DVT) or pulmonary embolism (PE) is highly unlikely.
Critical Value: >500 ng/mL FEU
Day(s) Test Set Up
Monday through Sunday
Useful For
The D-Dimer assay aids in the diagnosis of thromboembolic events. Elevated concentrations of D-Dimer are indicative of the presence of a clot and are found in clinical conditions such as deep venous thrombosis (DVT), pulmonary embolism (PE), and disseminated intravascular coagulation (DIC). D-Dimer levels rise during pregnancy and high levels are associated with complications.
Methodology
Latex Turbidimetry Immunoassay
Test Classification and CPT Coding
85378
Report Available
STAT within 1 hour of receipt
Routine within 2 hours of receipt