Factor XI, Activity
Also known as: F11
Use
Factor XI, Activity test is used to diagnose factor XI deficiency, also known as hemophilia C. This deficiency can lead to bleeding disorders since factor XI plays a crucial role in the blood coagulation process. Measurements of factor XI activity help in assessing the clotting ability of a patient's blood, which is vital for managing bleeding risks, especially during surgeries or injuries.
Special Instructions
The test requires special handling as specimens must be critically frozen. It is important for healthcare providers to ensure proper storage and transport conditions to maintain the integrity of the sample. Coordination with the laboratory for optimal specimen handling is necessary.
Limitations
This test is subject to limitations such as potential interference from certain anticoagulants or the presence of hemolyzed or clotted blood samples, which can affect the accuracy of the results. Samples collected improperly or handled inadequately may lead to erroneous results.
New York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 3226-8
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
2 mL
Minimum Volume
1 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Collect in a Lt. blue (sodium citrate) tube. Follow specimen handling guidelines for hemostasis/thrombosis tests.
Storage Instructions
CRITICAL FROZEN. Specimens must remain frozen during transport.
Causes for Rejection
Serum, EDTA plasma, clotted or hemolyzed specimens are unacceptable.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 hours |
| Refrigerated | Unacceptable |
| Frozen | 2 weeks |