Factor 8 (VIII) Inhibitor Assay
Order Name
FAC 8 INHB
Test Number: 1502300
Revision Date 10/08/2024
Test Number: 1502300
Revision Date 10/08/2024
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Factor 8 (VIII) Inhibitor Assay
|
Clot Detection | 3204-5 |
|
Factor 8 (VIII) Assay
|
Clot Detection | 3209-4 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 5.4 mL | Whole Blood | Sodium Citrate 3.2% (Blue Top) | Room Temperature |
| Alternate 1 | 3.0 mL | Double Spun Plasma | Sterile, Capped Plastic Tube | Frozen |
| Instructions | Please indicate anticoagulant therapy. Collect Two Sodium Citrate 3.2% (Blue Top) tubes. Each 2.7mL Sodium Citrate 3.2% (Blue Top) tube must be filled to the proper level, no hemolysis. Improperly filled tubes can give erroneous results. Whole blood must be transported to lab immediately. If testing cannot be started within 4 hours of collection the specimen must be double spun then 1.5mL plasma aliquot from each tube into individual plastic aliquot tubes and freeze. Do not pool aliquots together! |
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| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Wed |
| Expected TAT | 1-7 Days |
| Clinical Use | Factor 8 inhibitors are most commonly found in patients with severe hemophilia A. This assay is usually used to document the presence of these inhibitors and to titer their levels prior to surgery or to follow the response to plasma exchange. |
| CPT Code(s) | 85335, 85240 |
| Lab Section | Coagulation |