Item Value
Test name Fibrinogen, Functional
Available Stat? Yes
Turn around times STAT 1 hour, Routine 4 hours
In House Availability Test available 24 hours per day 7 days per week
Performed by Parnassus, Mission Bay & Mt. Zion Hematology
Normal range 202-430 mg/dL

Note:: Fibrinogen results may be inaccurate in patients who have recently received fibrinolytic therapy.
Container type Blue (2.7 mL) or Lt. Blue (1.8 mL) top filled to full extent of vacuum
Amount to Collect
Blue top 2.7 mL blood
Lt. Blue top 1.8 mL blood


Note: If hepabsorption is required draw a full Blue top (2.7 mL)
Collection Instructions 1. Check the expiration date on the label of the blue top vacutainer before drawing the patient.

2. For blood collection in a sodium citrate blue top, the tube must be filled to above the Minimum Fill Indicator on the tube. It is crucial to wait and allow the tube to stop filling before removing it from the needle.

3. With use of a butterfly needle, draw about 1 cc using a separate blue top to remove air from tubing, discard the first tube and then draw a second blue top tube filled to the full extent of the vacuum.

4. Tubes should not be filled past the Maximum Fill dashed line by either using a syringe or removing the tube cap..

For patients with Hct's ≥ 55% please contact Hematology (For Parnassus patients call 3-1747, for Mission Bay patients call 6-0194) to obtain blue top tubes with adjusted citrate volumes in order to maintain the proper citrate to plasma ratio for coagulation studies.
Sample type Citrated plasma

If you have additional questions regarding this test, please call: 415-353-1667