D-Dimer, Quantitative

Message

This is a Send-Out test sent to Quest.

Test Code

D-DIMER, QUANTITATIVE(O)

CPT Codes
85379

Preferred Specimen

1 mL frozen platelet-poor plasma collected in 3.2% sodium citrate (light blue-top) tube

Minimum Volume

0.5mL

Instructions

Platelet poor plasma: Centrifuge light blue-top tube 15 minutes at approx. 1500 x g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial. Plasma must be free of platelets (< 10,000/mcL). Freeze immediately and ship on dry ice.

Transport Container

Plastic screw-cap vial

Transport Temperature

Frozen (-70° C)

Specimen Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen (-70° C): 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis • Gross lipemia • Clotted specimen • Improper blood to citrate ratio • Plasma received room temperature • Plasma received refrigerated

Methodology
Immunoturbidimetric

Setup Schedule

Tues-Sat evenings

Report Available

Next day

Reference Range

<0.50 mcg/mL FEU

Performing Laboratory
Quest Diagnostics

Last Updated: January 4, 2024

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.