ARUP Test Catalog
ARUP Consult Guide
Lab Tests Online
Fibrinogen Level

Mnemonic:    [FIB]
Name:    Fibrinogen Level
Specimen:    2 mL plasma from a FULL sodium citrate Blue top tube. Allow tube to fill to proper capacity. Mix immediately by gentle inversion 4 times. Room temperature sample must be delivered to the CMMC hematology lab within one hour of collection. If the unspun sample cannot be delivered to the lab in that time period, the patient should be sent to the CMMC Outpatient Phlebotomy area for specimen collection.

A fibrinogen level may be added to an existing sample up to 8 hours after collection, if it was spun within one hour of collection and the container has not been uncapped for previous testing. If the tube has been previously uncapped, the sample is only stable for 4 hours from the time it was uncapped.
Reference Range:    220 - 450 mg/Dl
Critical Range:    < 100 mg/dL
  Method:    Mechanical Clot Detection
Processing Info:    The sample must be kept at room temperature prior to centrifugation. Any samples received separated must have been processed in a CAP approved calibrated and documented centrifuge to provide platelet poor plasma.