Ordering Recommendation

Optimize drug therapy and monitor patient adherence.

Mnemonic
FELBAMA
Methodology

Quantitative High Performance Liquid Chromatography

Performed

Mon-Fri

Reported

1-4 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation

Timing of specimen collection: Pre-dose (trough) draw - At steady state concentration.

Collect

Plain red. Also acceptable: Lavender (EDTA), pink (K2EDTA), green (sodium heparin), gray (sodium fluoride/potassium oxalate). Avoid use of separator tubes and gels.

Specimen Preparation

Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions
Remarks
Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 1 month; Frozen: 6 months

Reference Interval

Effective August 19, 2019

Therapeutic Range 30-60 µg/mL
Toxic Level Greater than 120 µg/mL

Interpretive Data

Patient pharmacokinetics may be variable due to age, co-medications, and/or compromised renal function. Adverse effects may include nausea, vomiting, dizziness, blurred vision and ataxia. Felbamate use may increase the incidence of liver failure and aplastic anemia.

Compliance Category

Laboratory Developed Test (LDT)

Note
Hotline History
N/A
CPT Codes

80339 (Alt code: G0480)

Components
Component Test Code* Component Chart Name LOINC
0094030 Felbamate 6899-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Felbatol
Felbamate