Technical interpretation of inhibitor to factor II testing
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.
Only orderable as part of a profile. For more information see 2INHE / Factor II Inhibitor Evaluation, Plasma
Technical Interpretation
Factor II Inhibitor Screen, Plasma
Plasma Na Cit
Only orderable as part of a profile. For more information see 2INHE / Factor II Inhibitor Evaluation, Plasma
Gross hemolysis | Reject |
Gross lipemia | Reject |
Gross icterus | Reject |
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Plasma Na Cit | Frozen | 14 days |
Technical interpretation of inhibitor to factor II testing
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.
Coagulation factor inhibitors arise in patients who are congenitally deficient in a specific factor in response to factor replacement therapy or can either occur spontaneously without known cause or in response to a variety of medical conditions, including the postpartum state, immunologic disorders, certain antibiotic therapies, some malignancies, and in the older population.
Inhibitors of factor VIII coagulant activity are the most commonly occurring of the specific factor inhibitors.
Only orderable as part of a profile. For more information see 2INHE / Factor II Inhibitor Evaluation, Plasma
An interpretive report will be provided.
When testing is complete, if factor activity results fall within clinically normal ranges, an interpretive comment will be provided noting that inhibitor testing was not indicated and, therefore, not performed. If factor activity indicates the performance of inhibitor screen testing, an interpretive comment will be provided noting the presence or absence of a factor II inhibitor.
Occasionally, a potent lupus-like anticoagulant may cause false-positive testing for a specific factor inhibitor (eg, factor VIII or IX).
1. Hoffman R, Benz Jr EJ, Silberstein LE, et al, eds. Hematology: Basic Principles and Practice. 7th ed. Elsevier; 2018
2. Kasper CK: Treatment of factor VIII inhibitors. Prog Hemost Thromb. 1989;9:57-86
3. Kottke-Marchant K, ed. Laboratory Hematology Practice. Wiley Blackwell Publishing; 2012
If the factor II activity level is normal or elevated, a computer-generated interpretive comment will be provided indicating inhibitor testing was not indicated and was not performed.
Not Applicable
85390
Test Id | Test Order Name | Order LOINC Value |
---|---|---|
2INHT | FII Inhib Profile Tech Interp | 69049-5 |
Result Id | Test Result Name |
Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
|
---|---|---|
2INHT | FII Inhib Profile Tech Interp | 69049-5 |