D-dimer

D-dimer

Alternate Test Name

D-Dimer

Epic Mnemonic
Sunquest Mnemonic

LAB3184
DDMR

Category

Coagulation

Methodology

Immunoassay turbidimetric

Test Performance Schedule

Sunday - Saturday

Result Availability

Within 24 hours – STAT upon request

Container

Light blue top tube (3.2% buffered sodium citrate)

Volume

Pref. Vol.: 1.0 mL plasma
Min. Vol.: 0.5 mL plasma

Collection Instructions

• Routine venipuncture.
• Immediately after collection, gently invert tube 5-10 times.
• Centrifuge the capped sodium citrate tube specimen tube for 15 minutes at 1500g(rcf). When removing plasma leave a minimum ¼ inch of plasma sitting on cells. The cellular layer contains the platelets which were separated from the plasma during centrifugation. Leave this cellular layer undisturbed. Pipette plasma in aliquot transport tubes for testing.
• Freeze PPP sample immediately (-20° C).

Transportation Instructions

• Frozen

Stability

Ambient:Up to 4 hours in whole blood state.

Frozen:Platelet poor plasma aliquoted and frozen within 1 hour of collection.

After separation from cells:

• 4 hours (15-25°C)

• 4 weeks (-20°C)

• 4 weeks (-70°C)

Causes for Rejection

• Collection tube not filled to the minimum fill line.
• Contaminated with heparin.
• Contains clots.
• Received more than 4 hours after collection.

• Not frozen within 4 hours after collection.

CPT Codes

85379

Effective/Revised

06/23/22