Ethosuximide
Test Mnemonic
ETHO
CPT Codes
- 80168 - QTY (1)
LOINC ®
3616-0
Aliases
- Zarontin
Performing Laboratory
ARUP
FDA Category
Laboratory Developed Test
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | No additive (Red) | Refrigerated | Timing of specimen collection: Pre-dose (trough) draw - At steady state concentration. Do not use serum separator tubes. Separate from cells ASAP or within 2 hours of collection and transfer into standard aliquot tube. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | EDTA (Lavender) | Refrigerated | Timing of specimen collection: Pre-dose (trough) draw - At steady state concentration. Do not use plasma separator tubes. Separate from cells ASAP or within 2 hours of collection and transfer into standard aliquot tube. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation from cells: 5 days |
| Refrigerated | After separation from cells: 1 week |
| Frozen | After separation from cells: 2 months |
Days Performed
Sun - Sat
Turnaround Time
2 - 6 days
Methodology
| Name | Description |
|---|---|
| Enzyme Immunoassay (EIA) |
Reference Range
| Ethosuximide | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | 99 Years | Normal | 40 - 100 | ug/mL | Toxic: > 150 ug/mL |
Special Info
Timing of specimen collection: Pre-dose (trough) draw - At steady state concentration. Unacceptable conditions: Whole blood, gel separator tubes, citrate (light blue) tubes, SPS or ACD solution (yellow) tubes. This test is New York DOH approved.
Clinical Info
Used to optimize drug therapy and monitor patient adherence.