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Test Code
DDI
Test Name
D-Dimer, Quantitative
CPT Codes
85379
Expected Turnaround Time
1 day
Clinical Utility

Used in the evaluation of deep vein thrombosis, pulmonary embolism, and disseminated intravascular coagulation. Diagnosis of a DVT or pulmonary embolism is unlikely when a quantitative D-dimer result is less than 0.5 µg/mL FEU.
Specimen and Container Info

Specimen Type: Plasma

Collection Container: 1 Full Light Blue Top (Sodium Citrate)  
Collection Instructions

Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate. Evacuated collection tubes must be filled to completion to ensure a proper blood-to-anticoagulant ratio.

Processing and Submission Instructions

Create platelet poor plasma within 4 hours of collection according to the Specimen Collection and Processing Guidelines for Coagulation Testing.
Transport Instructions
  • Inpatient: Transport to the laboratory at room temperature.
  • Outpatient: Transport to the laboratory frozen. 
Stability Requirements

Room Temperature

Platelet poor plasma: 8 hours

Frozen

Platelet poor plasma: 14 days 
Causes for Rejection
  • Gross hemolysis
  • Clotted specimen
  • Tube not properly filled
  • Specimen thawed in transit and outside stability
  • Sample past stability
Methodology
Immuno Turbidometric
Reference Intervals
SexAgeReference IntervalUnit
FemaleAll Age Groups<0.50ug/mL FEU
MaleAll Age Groups<0.50ug/mL FEU
Performing Location
17th Street Hospital, Carbon Hospital, Cedar Crest Hospital, Cedar Crest Red Lab, Dickson City Hospital, Hazleton Hospital, Hecktown Oaks Hospital, Muhlenberg Hospital, Pocono Hospital, Redeemer Health, Schuylkill Hospital
Alternate Names
  • Crossed linked fibrin derivatives
Testing Schedule
Routine daily, STAT testing available
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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