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HelpTest Code LAB313 D-Dimer, Quantitative
Useful For
1. This quantitative D-Dimer Assay is a highly reliable, non-invasive test intended for use as an aid in the exclusion of the diagnosis of Pulmonary Embolism (PE) and Deep Vein Thrombosis (DVT). A D-Dimer value below 230 ng/mL D-Dimer Units allows one to exclude a diagnosis of DVT and/or PE in about 30% of outpatients believed to be at risk. A significant number of such patients could have their work-up stopped in the setting of a low clinical suspicion.
2. This quantitative test is also used as a screening test for Disseminated Intravascular Coagulation (DIC).
Performing Laboratory
Asante Rogue Regional Medical Center (ARRMC)/ Asante Three Rivers Medical Center (ATRMC)/ Asante Ashland Community Hospital (AACH)
Performing Department
Hematology
Specimen Required
Blue top tube - Refer to ORDER OF DRAW
Note: The ratio of blood to anticoagulant is critical.
Vacutainers must draw their full volume.
Syringe Draw:
2.7 mL blood in 3 mL Blue top tube
1.8 mL blood in 2 mL Blue top tube
Specimens will not be accepted if tubes are not filled to their correct volume.
If multiple tests are drawn, draw coagulation studies first or second
Specimen Minimum Volume
1 properly filled 2 mL Blue top tube
Specimen Stability Information
Stable 4 hours unopened or opened, room temperature or refrigerated.
After 4 hours specimen must be centrifuged and plasma seperated from cells. Freeze plasma. Plasma can be stored up to 2 weeks frozen.
Reject Due To
- Quantity not sufficient (QNS)
- Specimens not filled to correct volume
- Lacking Two Patient Identifiers:
- 1-Patient's First & Last name
- 2-Patient's Date of Birth
- Hemolysis
- Clotted specimen
Day(s) Performed
Monday through Sunday
Routine - same day
ASAP - 2 hours after receipt of specimen in lab
STAT - 1 hour after receipt of specimen in lab
Method Name
Immunoturbidimetric
CPT Code Information
85379 - Fibrin degradation products, D-dimer; quantitative
Billing Code
2011872