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Test Code D Dim Qt D Dimer Quantitative

Useful For

Plasmin is the major clot-lysing enzyme derived from inactive plasminogen. It can cleave both fibrinogen and fibrin to yield various degradation products. Lysis of cross-linked fibrin yields derivatives (XDP) that contain the cross-linked D-domain (D-dimer). A positive test is indicative of secondary fibrinolysis.

Patient Preparation

No special patient preparation required

Special Collection Instructions

Properly filled 9:1 ratio (blood to anticoagulant); 3.2% NaCitrate tube

Collection Method

Venous Draw; properly filled 9:1 ratio (blood to anticoagulant)

Minimum Volume

0.5 ml of plasma from a properly filled 1.8 mL or 2.7 mL NaCitrate (light blue) tube

Container

Light Blue Sodium Citrate
 

Preferred Specimen

2.7mL Lt. Blue (3.2% NaCitrate)

Acceptable Specimens

1.8 mL Lt. Blue (3.2% NaCitrate) tube

Reference or Target Ranges

UH Normal 0-500 ng/mL FEU (Fibrinogen Equivalent Units)

WH Normal 0-0.5 mg/mL FEU (Fibrinogen Equivalent Units)

Reportable Units

UH : ug/mL Fibrinogen Equivalent Units (FEU)

WH : mg/mL Fibrinogen Equivalent Units (FEU)

Critical Value

UH: Outpatient and Emergency Department patients only: >500 ng/mL FEU

WH: Outpatient and Emergency Department patients only: >0.5 mg/mL FEU 

Reasons for Rejection

Hemolysis Threshold N/A
Icterus Threshold N/A
Lipemia Threshold N/A
Interfering Subtances/Other Short draws, over draws, clotted, improperly labeled, hemolyzed, lipemic or icteric samples, samples >24 hours from collection

Specimen Stability

Ambient 24 hours
Refrigerated (4°C to 8°C) N/A
Frozen(-70°C to -20°C) 15 Days@ -20°C; 1 year @ -70°C

Performance Information

Days and Time Performed 24/7
Expected Turn Around Time Stat: 1 Hour
Routine: 4 Hours
Stat Availability Yes
Performing Bench Coagulation
Instrument

UH : Werfen ACL TOPS

WH : Stago Satellites
Methodology/Method Description Turbidimetric Immunoassay

Special Handling

Once sample is received in Lab- testing must be performed on Platelet Poor Plasma

Additional Information/Important Notes

Platelet poor plasma must be used for this test.

CPT Codes

85379