Alberta Precision Laboratories

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Organization:

Alberta Precision Laboratories

Message Alert:

PLEASE NOTE: This Test Directory is in an interim state and due to changes pertaining to the DynaLIFE transition, performing site for routing has not been updated. Please refer to Laboratory Information System for appropriate routing.

Test Name/Synonym:

Factor XI Activity
(Synonym: Factor XI, Factor 11)

Ordering Alert:

Order Hemostasis Investigations
Calgary:
Specimens MUST be accompanied by a copy of the original requisition.

Send the original requisition for optical scanning.

Collection Alert:

Test cannot be collected by Mobile Collection Service.

Shipping and Handling Alert:

Specimens are time sensitive.

LABID (Connect Care):

LAB309

Test Code:

CALGARY ZONE	HS1
CENTRAL AND NORTH ZONES	F11
SOUTH ZONE	HEMS

Specimen Type:

Blood

Specimen Source:

Blood

Primary Container:

LT BLUE CITRATE

Minimum Collection Volume:

For testing sent to Calgary:
Refer to Hemostasis Investigations
For testing sent to Edmonton:
Adults: One 2.7 mL LT blue citrate tube, allow the vacuum tube to completely fill, minimum fill is to frosted line on tube.
Pediatric and Neonate: One 2.7 mL or 1.8 mL LT blue citrate tube, allow the vacuum tube to completely fill, minimum fill is to frosted line on tube.

Specimen Collection Requirements:

It is important to fill tube to maximum draw.
Mix well immediately after collection by inverting tube 3 to 4 times.
If venous access is not available, sample can be drawn from a line but 6x the volume of the line or 5 mL (whichever is less) must be removed prior to collection.
When using a winged blood collection set (butterfly needle), a discard tube must be used to remove the air in the tubing, if only a citrate tube is drawn or is the first tube drawn.

Test Resources:

Special Coagulation Testing Requisition Hemostasis Investigations

Stability and Storage:

Room temperature – 3.5 hours

Processing:

For testing sent to Calgary:	For testing sent to Edmonton:
Refer to Hemostasis Investigations	For specimens that will be received beyond stability: Centrifuge to obtain platelet poor plasma (platelet count <10 x 10*9/L) Aliquot plasma into 2 plastic aliquot tubes and freeze. Each aliquot must be at least 0.5 mL

Transportation:

Room temperature – uncentrifuged
Frozen (dry ice if available)

Routine Turn Around Time:

Calgary:
For stat testing contact Special Coagulation Laboratory
After hours contact the Hematopathologist on call.
Edmonton:
For stat testing MUST contact the Hematopathologist on call.

Testing Schedule:

Batched

Reference Interval:

Greater than or equal to 0.50 U/mL

Testing Area:

Special Coagulation

Performing Site:

Calgary	Diagnostic and Scientific Centre
Edmonton Zone	University of Alberta Hospital

Contact Comments:

1-877-868-6848

Last Updated On:

Wednesday, September 7, 2022