Phenytoin
| Source |
Blood |
| Mnemonic |
PTN |
| Specimen Requirements |
1 x 5 mL light green (mint) top PST tube. Gold top SST tube is also acceptable.
Minimum Blood Volumes for Patients less than 45 kg (100 lb) Including Neonates and Pediatrics
COLLECT specimen 0-60 minutes prior to next oral dose or greater than 2 hours post IV dose. |
| Specimen Handling |
|
| Additional Information |
RECORD time of last medication on requisition.
For additional information, see Half-life and time to Steady State. |
| Testing Location |
Chemistry-ACH, DSC, FMC, PLC, RGH & SMCHC |
|
| Testing Frequency |
Daily |
| Alternate Name(s) |
Dilantin |
| Reference Interval |
Therapeutic range
|
0 – 3 months
|
25.0 – 55.0 mmol/L
|
|
4 months – 150 years
|
40.0-80.0 mmol/L
|
Click here for critical values. |
|
