Phenytoin - Free (Blood) Test | Austin Pathology

View the new Tube Guide and Swab Guides. You can also order hard copies via our Order Form.

Austin Pathology

Test Directory

Search in the bar above for available tests.
Type any letter of the alphabet to be presented with all available results for that letter.

Phenytoin - Free (Blood)

Alternate Names	Free Phenytoin, Phenytoin Level Free
Test Code	PHENYF
Testing Laboratory	Biochemistry
Specimen Type	Blood
Container Type	9 mL PLAIN (Red Top)
Medicare Rebate	Yes
Out of Pocket Costs	None
Ordering Information	This is a calculated analyte from Albumin and Total Phenytoin levels.
Collection Instructions	Trough level is collected before next dose (within 1 hour) OR at least 6 hours after last dose.
Transport Instructions	Transport ambient at room temperature
Storage Instructions	Store refrigerated at 4°C
Testing Frequency	Daily
Min Test Volume	1mL
Add On Test Suitability	This test cannot be added after 72 hours of collection.

Container ID	S, SP
Laboratory Instructions	Phenytoin testing is only available at the Heidelberg, Mildura and Shepparton laboratories.
Accredited Test	Yes

These PDF documents can be downloaded for your reference

Order of Draw (PDF)

Swab Collection Guide (PDF)

Pre-Transfusion Specimen Requirements (PDF)

Requirements for Pathology Service (PDF)