Referred Tests
| Web: | mayocliniclabs.com |
|---|---|
| Email: | mcl@mayo.edu |
| Telephone: | 800-533-1710 |
| International: | +1 855-379-3115 |
| Values are valid only on day of printing. | |
Test ID: 11INE
Factor XI Inhibitor Evaluation, Plasma
Useful For 
Suggests clinical disorders or settings where the test may be helpful
Detection and quantitation of inhibitor to coagulation factor XI
This test is not useful for the detection of a lupus-like circulating anticoagulant inhibitor, a nonspecific circulating anticoagulant, or other inhibitors that are not specific for coagulation factors.
Profile Information A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| 11INT | FXI Inhib Profile Tech Interp | No | Yes |
| F_11 | Coag Factor XI Assay, P | Yes | Yes |
Reflex Tests Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests.
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| 11AIH | FXI Inhib Profile Prof Interp | No | No |
| 11_IS | Factor XI Inhib Scrn | No | No |
| GBETH | General Factor Bethesda Units, P | No | No |
Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
Testing begins with coagulation factor XI activity assay with dilutions to evaluate assay inhibition; if the factor XI activity assay is normal or increased, then a technical interpretation will be provided.
If the factor XI activity assay is decreased, then an inhibitor screen will be performed at an additional charge to look for specific factor XI inhibition and a professional interpretation will be provided. If specific inhibition is apparent, the titer of the inhibitor will be determined.
Special Instructions Library of PDFs including pertinent information and forms related to the test
Method Name A short description of the method used to perform the test
Optical Clot-Based