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HelpTest ID BLOD0539 Phenytoin
AKA
Dilantin
Specimen Type/Requirements
Red top (Serum w/out gel) tube - Serum
Gold top (Serum w/gel) tube - Serum
Light Green top (Lithium Heparin w/gel) tube - Plasma
Trough levels are most reproducible; draw 30 minutes prior to next scheduled dose.
Test is not affected by hemolysis or lipemia.
Specimen Volume
| Preferred Volume | 1.0 mL |
|---|---|
| Minimum Volume | 0.4 mL |
Stability/Transport
| Room Temperature | 2 days | |
|---|---|---|
| Refrigerated | 1 month | Preferred for transport |
| Frozen | 5 months |
Performed Test Frequency
Monday through Sunday
Methodology
Enzymatic
Performing Lab
Sanford Laboratories Sioux Falls
CPT
80185