Dilantin (Phenytoin)
Order Name
DILANTIN
Test Number: 4002300
Revision Date 05/03/2021
Test Number: 4002300
Revision Date 05/03/2021
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Dilantin (Phenytoin)
|
Enzyme Immunoassay | 3968-5 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 1 mL (0.5) | Plasma | Lithium Heparin PST (Light Green Top) | Refrigerated |
| Alternate 1 | 1 mL (0.5) | Serum | Clot Activator SST | Refrigerated |
| Instructions | Draw level 4 hours after IM or 2 hours after IV administration of Cerebyx (Fosphenytoin). Draw 2-4 hours after administration of oral Dilantin. Pour off serum or plasma if testing cannot be performed within 24 hours. Specimen stability after separated from cells: Ambient 2 days, Refrigerated 1 month, Frozen 5 months |
|||
| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Daily |
| Expected TAT | 1-2 days |
| Clinical Use | Useful for monitoring for appropriate therapeutic level and assessing toxicity. |
| CPT Code(s) | 80185 |
| Lab Section | Chemistry |