FIBRINOGEN (089-0038)

CPT 4 Code:  85384

Test Order Mnemonic: FIBRINOGEN

Applies To: Measures levels of fibrinogen and is a useful test in diagnosis of DIC.

Request Form: Hematology A

Collection: Routine venipuncture. Discard 1st ml of blood or collect other tubes (EDTA, Serum-separator, etc.) prior to collecting sample in citrate (blue-top tube).

Storage Instructions: Viable for 4 hours at room temperature. If time from draw to delivery is to be greater than 4 hours, centrifuge the sample, separate the plasma from cells, and snap freeze (-70°C)  the plasma. Snap frozen plasma is viable indefinitely.

Causes for Rejection: QNS, clotted, severely hemolyzed, greater than 4 hours old, identification error, processed and/or stored improperly.

Availability: Accepted 24 hours/day at Sample Management, Room 5.136 McCullough.

Turnaround Time: STAT: 1 hour; Routine: 4 hours

Special Instructions: Deliver sample to lab within ½ hour for best results. Accepted up to 4 hours.

Specimen: Blood

Volume: 4.5 ml

Min Volume: Call Lab

Container: 3.2% Sodium citrate tube (light blue-top)

Reference Range:  214 - 470 mg/dL

Critical Value: < 100 mg/dL

Test Method: Electromagnetic Viscosity Detection

Interfering Substances:  Highly elevated FDP’s

Reviewed 10/11/07 by W. Russo, MT(ASCP)