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Test Code LAB313 D-Dimer

Department

HEMATOLOGY

Collection Requirements

Must be a full draw.

Mix thoroughly immediately after collection.

Primary Collection Container

Blue 2.7 mL (Citrate)

Transport

Platelet-poor plasma frozen

Preferred Transport Temperature

Frozen

Processing

Mix tube thoroughly before centrifugation.

If freezing, prepare using the following method:

Centrifuge specimen. Use a plastic pipette to transfer top three-quarters of plasma into labeled plastic tube. When removing the plasma layer, be careful not to disturb the cell layers. Plasma separated from cells goes back into the centrifuge for a second spin. After the second spin, use a pipette again to transfer plasma to a new set of labeled aliquot tubes, then freeze.

Preparation of Platelet-Poor Plasma

Stability

Ambient: 2 hours

Refrigerated: 8 hours

Frozen: 30 days

Minimum Testing Volume

1.0 mL

Reference Range

200-300 ng/mL

Critical value: >500 ng/mL

Methodology

Immuno Automated Latex Inhanced Immunoassay

ACL Top

Performed

Sunday – Saturday

Reported

As completed

CPT Codes

85379

Unacceptable Conditions

Hemolyzed, clotted, short drawn, non-frozen and serum specimens.