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D-Dimer, Blood - RGH-Pasqua/Saskatoon

Discipline

Hematology

Specimen Information

Specimen types accepted

Whole blood

Specimen collection container

Preferred collection container: BLUE plastic (3.2% Buffered Na citrate)

Collection procedure

RGH/Pasqua	Analysis must be performed within 4 hrs if tube is OPENED. Analysis can be performed within 24 hr on UNOPENED tube otherwise double spin and freeze.
Saskatoon	See Collecting and Shipping Specimens for Coagulation from Laboratories outside Saskatoon

Required volume

Optimal volume: 2.7mL
Collection tube must be filled until the vacuum on the tube is completely exhausted to maintain an anticoagulant : blood ratio of 1:10
Minimum volume: 1.0 mL platelet poor citrated plasma

Transport and stability

24 hours at room temperature
30 days frozen as platelet poor plasma at less than -20 degrees (regular freezer)
2 years frozen as platelet poor plasma at less than -70 degrees

Rejection criteria

Hemolysis
Clotted specimen
Inappropriately filled tubes
Plasma specimen that has thawed and been refrozen
Plasma specimen that has thawed for more than 2 hours
Pathology and Laboratory Medicine Acceptance and Rejection Criteria

Performance

Methodology

Latex enhanced immunoassay

Days/times performed

24 hours a day, 7 days a week

Maximum laboratory time

STAT D-Dimers are available within one hour of receipt in the lab

Specimen retention time

Specimens are stored within the lab for 24 hours

Last Updated: November 26, 2024