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FIBRINOGEN ACTIV,CLAUSS

Test Number:
  • 376
Test Alias:
Preferred Specimen:
  • Whole blood
Container Type:
  • One full 3.2% sodium citrate (light blue-top) tube
Alternative Specimen:
  • 1 mL platelet-poor anticoagulated plasma collected in a 3.2% sodium citrate (light blue-top) tube, separated and frozen immediately.
Volume:
  • 4.5 mL
Collection Instructions:
  • Correct ratio of blood to citrate is critical. Do not overfill or underfill collection tube. Mix by inversion 4 times. Do not pool plasma from multiple tubes. For non-heparinized patients, maintain specimen at room temperature. Do not uncap. Non-heparinized patients are stable up to 72 hours at room temperature. Heparinized patients stable for 24 hours at room temperature. If testing cannot be completed within stability limits, centrifuge specimen within 1 hour of collection at 2500-3500 RPM. Transfer plasma to a plastic screw-cap vial and freeze at -20° C immediately.
Transport Temperature:
  • Room temperature: Sodium citrate (light blue-top), Frozen: Plasma in plastic screw-cap vial(s)
Specimen Stability:
  • Whole blood (3.2% sodium citrate):
  • Room temperature: 72 hours (non-heparinized)
  • Platelet-poor plasma:
  • Frozen -20° C: 30 days
  • Frozen -70° C: 6 months
Methodology:
  • Photometry/Optical, Clauss
CPT Code:
  • 85384
Reject Criteria:
  • Gross hemolysis • Clotted
Reference Range:
Report Available:
  • 2 days

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