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Test Code LAB313 D-Dimer, Quantitative, Plasma

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Methodology

Agglutination

Literature References:

HemosIL D-Dimer HS 500 package insert issued 04/2018, Instrumentation Laboratory.

Specimen Requirements

Specimen Type: Plasma
Container/Tube: Light-blue top (citrate)
Specimen Volume: Full tube

Specimen Minimum Volume: Full tube
Collection Instructions:

  1. Draw a discard blue top tube prior to drawing a light-blue top (citrated) tube if using a Winged Infusion Set.  Discard tube should be under filled and discarded.
  2. Clotted blood or an insufficient specimen is not acceptable.
  3. Avoid phlebotomy techniques which cause hemolysis and heparin contamination.
  4. Follow nursing policy on volume of blood to discard prior to collecting blood from indwelling heparinized catheters.

Analyte Stability:
24 hours at 2° C to 24° C.

Platelet-free plasma can be frozen at -20 for transport on dry ice up to 72 hours
or stored 6 months at -70° C.


Additional Information: If the patient is a hospital patient and the hematocrit is >55%, call Barnes-Jewish Hematology Laboratory at 314-362-5203 for instructions.

Day(s) Test Set Up

Monday through Sunday

Turnaround Time:
STAT: 1 hour after receipt in the laboratory
Routine: 2-4 hours after receipt in the laboratory

Test Classification and CPT Coding

85379

Reference Values

< 500 ng/mL Fibrinogen Equivalent Units (FEU)

Literature References:

1. Francis CW, Markham RE, Marder VJ. Demonstration of in situ fibrin degradation in pathologic thrombi. Blood 1984;63,1216-24.
2.  Gosselin RC, et al. Comparison of six d-dimer methods in patient suspected of deep vein thrombosis. Blood Coagul Fibrinolysis 2003;Sep;14(6):545-50.

Specimen Transport Temperature

Ambient Yes/Refrigerate NO/Frozen Yes

Additional Information

For BJH Laboratory Use Only
Analyte Stability:

24 hours at 2° C to 24° C.

Platelet-free plasma can be frozen at -20 for transport on dry ice up to 72 hours
or stored 6 months at -70° C.

Laboratory Processing Instructions:

Test performed in BJH core lab.

LOINC Code Information

Name LOINC Code
D-Dimer, Quantitative, Plasma 48065-7