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22622 Felbamate

Felbamate
Test Code: FELB
Synonyms/Keywords
Felbatol​
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.  ​
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.​
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
Performing Laboratory 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. ​
Test Information
This test was developed and its performance characteristics determined by Marshfield Labs. This laboratory is certified under the Clinical Laboratory Improvement Amendments (CLIA) to perform high complexity testing.
​
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.​
​See Critical Value List for list of current critical values​
Interpretation
​Trough concentrations are most accurate and recommended for therapeutic drug monitoring. Preferably obtained just before the next dose.
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
80299​ ​ ​ ​ ​
Classification
This test was developed and its performance characteristics determined by Marshfield Labs. This laboratory is certified under the Clinical Laboratory Improvement Amendments (CLIA) to perform high complexity testing.
​
Synonyms/Keywords
Felbatol​
Ordering Applications
Ordering Application Description
​Centricity ​Felbamate
​Cerner ​Felbamate Level
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
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
Specimen should be collected prior to dosing.  Please indicated collection time.​
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
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.  ​
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.​
​See Critical Value List for list of current critical values​
Interpretation
​Trough concentrations are most accurate and recommended for therapeutic drug monitoring. Preferably obtained just before the next dose.
For more information visit:
Performing Laboratory 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. ​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
80299​ ​ ​ ​ ​
Classification
This test was developed and its performance characteristics determined by Marshfield Labs. This laboratory is certified under the Clinical Laboratory Improvement Amendments (CLIA) to perform high complexity testing.
​
For most current information refer to the Marshfield Laboratory online reference manual.