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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Fibrinogen

Test Code(s): FIBR / GM1320

CPT Code(s): 85384

Methodology: Mechanical Clot Detection

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.

Specimen Requirements

Specimen: Blood

Collection Instructions: The venipuncture MUST be atraumatic to avoid hemolysis and contamination with tissue factors and platelets. Tube MUST be allowed to fill up to "fill" line indicated on tube.

If unable to collect 1.8 ml tube (pediatrics only) please call Core Coagulation Lab at 263-9617 or Special Coagulation Lab at 263-5005 for alternate tube and instructions.

Collection Container: Preferred: Light blue top (3.2% NaCitrate)

Collection Volume: Preferred: 3.5 mL
Pediatrics: 1.8 mL

Sample Analyzed: Plasma

Volume Required: Preferred: 0.5 mL
Pediatrics: 0.5 mL

Specimen Processing: Centrifuge specimen to yield platelet poor plasma (platelet count should be less than 10K/uL). Separate plasma and transfer to plastic tube or vial. Freeze plasma at -20C or below.

Specimen Transport: Transport whole blood specimen to UWHC Core Laboratory (B4/220) within 24 hours of collection.  Otherwise, transport frozen plasma aliquot on dry ice to UWHC Core Laboratory (B4/220).

Unacceptable Criteria: Grossly hemolyzed specimens, clotted specimens, partially filled tubes and whole blood specimens greater than 24 hours old when received by the laboratory are not acceptable.

Stability: Ambient: 24 hours if left unspun; 8 hours spun and opened
Refrigerated: Not acceptable
Frozen: 2 weeks at -20C; 6 months at -70C


Reference Interval:

0 days and up: 200-440 mg/dL

Critical Calls: View

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