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EPIC CODE: LAB313 D-Dimer

ADDITIONAL TEST CODE

Sunquest: DDIMR

REGIONAL HOSPITAL PERFORMING

UPH Methodist Hospital

Collect

One lt. blue (3.2 % sodium citrate).

Draw a red top tube prior to drawing blue top. Specimen must fill to the fill line on the tube. Mix by gentle inversion.

Storage/Transport Temperature

Lt. blue top tube at room temperature up to 4 hours. If testing will not be performed within 4 hours specimen must be spun and separated. Plasma should be transferred to a separate tube and frozen.

Stability (from collection to initiation)

Ambient (room temperature): 4 hours

Frozen (-20oC) Stability: 2 weeks

Unacceptable Conditions

Serum, grossly hemolyzed or clotted specimens, underfilled tubes, Room Temperature or Refrigerated (2-8oC) Stability:samples.

Days Performed

Daily – Coagulation

Methodology

Photometric measurement – Stago Compact Max

Interpretive Data

Studies have shown thata D-Dimer result of less than or equal to 0.50 ug/mL {FEU} has a negative predictive value (cutoff) of approximately 95% for excluding PE and DVT.

D-Dimer is useful for excluding the diagnosis of venous thromboembolism when results are combined with clinical information including pretest disease probability. Use of age adjusted Dimer cutoff with probability assessment can be used to rule out suspected PE in emergency department patients and is associated with low likelihood of subsequent syptomatic VTE.

CPT Codes

85379