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5-Flucytosine, Serum

Test

Method

LC-MS/MS

Report Includes

5-Flucytosine

Specimens

Serum

Test Location

MN, USA

Test Version

30-Sep-2019

Specimen

Specimens

Serum

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 28 days
Refrigerated 28 days
Frozen 28 days

Test Version

30-Sep-2019

Performance / Interpretation

Method

LC-MS/MS

Turnaround Time

15 days

Specimen Retention Time

14 days

Results

Name Units Reference Range Conversion Factor
5-Flucytosine µg/mL
  • Therapeutic Peak: ≥25.0
  • (Difficult infections may require higher concentrations)
  • Toxic Peak: ≥100.0

Test Location

MN, USA

Test Version

30-Sep-2019

Interface / Setup

Test Version

30-Sep-2019