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Test Name:
Ethosuximide
- SBMF No:
44044 - Performance Lab Name:
ARUP Laboratories - Test Mnemonic:
ETHOSUX - ABN:
Not required - CPT Code:
80168 - LOINC Code:
3616-0 - Ref Lab Test No:
0090415 - Also Known As:
Zarontin® - Spec Type:
Serum - Spec Container:
Red top (serum) tube - Alt Spec Type:
Plasma - Alt Spec Container:
Lavender top (EDTA) tube or green top (sodium heparin) tube - Pref Vol:
1.0 mL - Min Vol:
0.5 mL - Fasting:
No - Spec Collect:
Do not use gel-barrier tubes for specimen collection
Routine venipuncture - Spec Process:
Serum sample tubes, clot 30 minutes
Promptly centrifuge 15 minutes
Immediately transfer serum or plasma to separate plastic tube - Spec Store Transport:
Refrigerated - Spec Stability:
After separation from cells:
5 days room temperature (20-30°C)
2 weeks refrigerated (2-8°C)
2 months frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles - Methodology:
Enzyme Immunoassay (EIA) - Use:
Evaluate toxicity; monitor therapeutic levels - Reference Range:
- Ethosuximide
- 40-100 μg/mL
- Critical High Value:
Toxic: Greater than 150 μg/mL - Day Run:
Sun-Sat (daily) - Time Reported:
2-3 days - Test Type:
TOX-TDM
