Laboratory Test Information Guide

Details for Fibrinogen

Test Name: Fibrinogen
Alternate Name(s):  
Laboratory: Core UH & VH
Specimen Type: 2.7 mL Blue (3.2% Sodium Citrate) Vacutainer tube

1.8 mL Blue (3.2% Sodium Citrate) top Vacutainer tube
*In cases where access is difficult, a 0.9 mL Blue top tube is acceptable
Collection Information: Can be performed on the same tube as an INR or PTT.
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
4 hours
1 hour
Reference Range: 1.6-3.4 g/L
Effective Date: 2011-01-14
Revised Date: 2017-11-28
Critical Value: ≤1 g/L
Interpretive Comments: Decreased level indicates increased consumption, decreased production or dysfunctional fibrinogen.
Special Processing:  
Comments: Fibrinogen levels ordered at St. Joseph's Health Care will be sent by cab to University Hospital for analysis.

INR/PTT will be performed at St. Joseph's Health Care Core Laboratory and the specimen will then be sent on ice to University Hospital for a fibrinogen level.
Method of Analysis: Automated clot detection
Critical Information Required:  
Storage & Shipment: Blue (Sodium Citrate) top specimens are kept at 18-24 degrees Celsius.

Blue (Sodium Citrate) top specimens should be centrifuged and tested within 4 hours from the time of specimen collection or plasma should be removed from the cells and frozen.

Specimens may be kept for up to two weeks at -20 degrees Celsius or up to six months at -70 degrees Celsius.

Plasma aliquots are stored at -20 degrees Celsius or below and transported to arrive frozen.

Thaw samples in a 37 degree Celsius waterbath and process immediately.

Samples are discarded after 4 hours.
System Codes: 
Referred To:  

Questions? Comments? Contact Laura Gopaul