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General Information
Alias: DDIMER, FSP/FDP
Performed: 24 hrs.
Turn Around Time: Med Emerg: 60 minutes; Routine: 4 hrs
CPT Codes: 85379
Performed By: Hematology
Notes:
D-Dimer has increased specificity and is performed instead of FSP/FDP.
May be tested from same tube as PTT however, follow PTT stricter collection and delivery guidelines.
Test also performed by the Rapid Response Lab.
Clinical Utility: D-Dimer <0.50 mcg/mL can be used to rule out DVT/PE in >98% outpatients with low clinical probability. D-Dimer is also useful in the diagnosis of fibrinolysis and DIC (particularly when combined with platelet count, fibrinogen level, PT, and PTT).
Unacceptable Conditions:
Clotted, severely hemolyzed, refrigerated, and/or on ice. Heparin (UFH) will prolong results. Specimens should not be drawn with heparinized syringe, through lines containing heparin, or during procedures using heparin (such as dialysis or apheresis). Collection through PICC lines and medi-ports are generally unacceptable due to insufficient flush and discard.
D-Dimer results on the ACL TOP Family are not affected by hemoglobin up to 500 mg/dL, bilirubin up to 18 mg/dL, triglycerides up to 1327 mg/dL and Rheumatoid Factor up to 1400 IU/mL.
Components
| Name |
Method |
Sex |
Age Range |
Ref. Range Low |
Ref. Range High |
Units |
| D-Dimer, Quant |
Turbidimetric reading of monoclonal aggregation with D-Dimer cross-linkage |
All |
All |
|
< or = 0.500 |
mcg/mL |
Specimen Requirements
| Type |
Container |
Volume |
Units |
Collection / Delivery |
Storage / Transport |
Off Campus |
| Blood |
Blue 3.2% Na Citrate, 3 ml |
Draw to fill line |
|
Must be received in lab within 3 hours of collection. |
Room Temperature |
Deliver to Logistics Hematology Lab via STAT courier. |