|
|
General
|
| |
Clinical Use:
|
Therapeutic drug monitoring. Phenytoin is an anticonvulsant. This test measures phenytoin that is free/unbound from blood protein. This test is only warranted when phenytoin total level >6 mg/L. |
| |
Availability:
|
Samples are tested routinely during the testing laboratory's hours of operation. |
| |
Aliases/Synonyms:
| Free Dilantin, |
| |
Code:
|
PHF |
| |
Handling Instructions (to laboratory):
|
Send sample chilled. |
| |
Hyperlink:
|
|
| |
Reference Interval:
|
1 - 2 mg/L
|
Collection Requirements
|
| |
Container:
|
Lithium Heparin-PST (GREEN), |
| |
Sample Type:
|
See container |
| |
Minimum Collection Volume:
|
|
| |
Collection Instructions:
|
Collect sample prior to dose as trough level.
Record date, time and dosage of last dose on request form.
If sample will not reach laboratory within 24 hours of collection, it must be centrifuged and separated from gel. |
Processing Requirements
|
| |
Alternate Containers:
|
|
|
|
|
Lithium Heparin, No Gel (DKGNLITH) |
| |
Processing Instructions:
|
|
| |
Minimum Assay Volume:
|
4mL |
| |
Stability:
|
24 hours chilled (unseparated); |
| |
Transport Instructions (to testing laboratory):
|
Send sample chilled. |
Testing Locations
|
| |
Performed at:
|
|
Section
|
Department
|
Site
|
Contact Phone
|
| Core |
Biochemistry |
QEII Medical Centre |
6383 4093 |
|
Last Updated : 07-10-2020 13:40 |