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HelpTest Code FELB Felbamate
Useful For
This test is useful for monitoring felbamate in blood. Felbamate is a relatively non-toxic drug that is not associated with major side effects in higher concentrations
Synonyms/Keywords
Felbatol
Specimen Requirements
| Fasting Required | Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|---|
| No | Serum | Red Top Tube (RTT) | 0.5 mL | 0.5 mL | 0.3 mL |
Collection/Processing Instructions
Specimen should be collected prior to dosing. Please indicated collection time.
Separate serum/plasma from cells within 2 hours of collection.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Ambient | 48 hrs |
| Refrigerate | 2 weeks | |
| Frozen | 2 weeks |
Rejection Criteria
Specimens collected in serum or plasma separator tubes
Test Information
This test was developed and its performance characteristics determined by Marshfield Labs. It has not been cleared or approved by the US Food and Drug Administration. This test is used for clinical purposes. It should not be regarded as investigational or for research.
Interpretations
Trough concentrations are most accurate and recommended for therapeutic drug monitoring. Preferably obtained just before the next dose.
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| Marshfield | Patients receiving a maximum 3600 mg dose show typical serum felbamate levels of 50-80 ug/mL with a range of 25-135 ug/mL, without toxicity. |
Marshfield Labs Performing Department
Marshfield Labs Special Chemistry
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Marshfield | Monday, Wednesday, Friday | 1 day | UPLC MS/MS - Waters Acquity UPLC, XEVO TQ-S Tandem Mass Spectrometry System |
| Samples must be in performing department by 8am on day of testing for results the same day. Testing may be batched and set up on alternative days of the week as needed. | |||
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 80167 | 1 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 80167 | 1 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Felbamate Level |