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Test Directory


D-Dimer, Quantitative

Test Number: 1501625
Revision Date 07/09/2020
Test Name Methodology LOINC Code
D-Dimer, Quantitative
Latex Immunoassay Agglutination 48065-7 
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 2.7 mL Whole Blood Sodium Citrate 3.2% (Blue Top) Room Temperature
Alternate 1 1.5 mL Double Spun Plasma Sterile, Capped Plastic Tube Frozen
Instructions Please indicate anticoagulant therapy. 
Each 2.7mL Sodium Citrate 3.2% (Blue Top) tube must be filled to the proper level, no hemolysis. Improperly filled tubes can give erroneous results. 
Whole blood must be transported to lab immediately.
If testing cannot be started within 4 hours of collection the specimen must be double spun then 1.5 mL plasma aliquot from each tube into individual plastic aliquot tubes and freeze.

Do not pool aliquots together!
Testing Schedule Daily 
Expected TAT 1 Day  
Clinical Use The D-Dimer test may be useful in the diagnosis of thrombosis, DIC, hyperfibrinolytic coagulopathies, and monitoring fibrinolytic therapy. The D-Dimer test is not subject to false positive results in the presence of heparin like the fibrin split products test. The D-Dimer may be decreased in patient on anticoagulant therapy. 
CPT Code(s) 85379
Lab Section Coagulation