Test Overview
Method
Liquid chromatography-tandem mass spectrometry (LC-MS/MS)
Result Included
5-Flucytosine
Specimen
Specimen Type
SerumVolume
Sample Volume
0.5 mL
Minimum Volume
0.3 mL
Specimen Comment
Gel-separator tubes are acceptable.
Collection & Handling
Collection Instructions
Peak specimen should be drawn 1 to 2 hours after oral dose or 30 minutes after intravenous infusion. Trough specimens should be drawn immediately prior to next dose.
Handling Information
Separate serum within 2 hours. Store and send frozen.
Stability
| Ambient | Refrigerated | Frozen |
|---|---|---|
| 28 days | 28 days | 28 days |
Performance & Interpretation
Turnaround Time
15 days
Specimen Retention Time
14 days
Results
Name
Units
Reference Range
Conversion
-
5-Flucytosineµg/mLTherapeutic Peak: ≥25.0
(Difficult infections may require higher concentrations)
Toxic Peak: ≥100.0
Referral Location
Out-of-Country
Test Version
Last Updated
2019-09-30