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HelpTest Code Factor Inhib Assays Factor Inhibitor Assays (II, V, VII, IX, X, XI, XII)
Synonyms/Keywords
Inhibitor
Specimen Requirements
| Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|
| *Platelet Poor Plasma | 3.2% Citrated Blue Top Tube (BTT) | Two 0.75 mL aliquots | Two 0.75 mL aliquots | 0.75 mL |
Collection/Processing Instructions
Note: The specific Factor Assay should be test requested at the same time as the specific Factor Inhibitor. The specific Factor Inhibitor will only be performed when the Factor Assay result is below the reference range.
Two 0.75 mL citrated Blue Top Tube (BTT) plasma aliquots. (If more than one coagulation test is ordered, a separate aliquot is needed for each test.)
- Collect in Citrated Blue Top Tube (BTT)
- Citrate anticoagulant must be adjusted for HCT >55%
- Tubes must be at least 90% full
- Invert completely 3-4 times (without shaking) to mix
*See Instructions for: Preparation of Platelet Poor Plasma
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma | Frozen | 6 months |
Rejection Criteria
| Clotted or Hemolyzed |
|---|
| Contamination with IV or Hickman Line fluids |
| Specimens that thaw during storage or transport |
Test Information
Note: The specific Factor Assay should be test requested at the same time as the specific Factor Inhibitor. The specific Factor Inhibitor will only be performed when the Factor Assay result is below the reference range.
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| Marshfield | 0.0 Bethesda Units |
Marshfield Labs Performing Department
Marshfield Labs Hematology
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Marshfield | Monday and Thursday | 2-4 hours | Siemens CS2500 |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 85335 | Bethesda assay |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 85335 | Bethesda assay |
Ordering Applications
| Ordering Application | Description |
|---|---|
| COM | Misc Test |