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Effective Jan. 5, 2026: Temporary Age-Based Visitor Restrictions at UNC Health for all inpatient and waiting areas throughout its inpatient hospitals.

Published on October 22, 2021

5-Flucytosine, Serum

Tube Type

Test ID		LAB5115
EPIC Order		5-FLUCYOSINE
CPT Code(s)		80299
Group/Individual Test		Group
Laboratory		Core Referral Testing
Tube Station		30
Specimen	Routine:	3 mL blood/red plain tube/gold SST also acceptable; See Comments
	Micro:	1 mL
Availability	Routine:	Referral Laboratory - Mayo Clinic Laboratories
Turnaround Time		3-9 days
Reference Range	Normal:	See separate report
Comments	Peak specimens should be collected 1 to 2 hours after oral dose or 30 minutes after intravenous infusion. Trough specimens should be collected immediately prior to next scheduled dose.

Reviewed by J. Carr on December 12, 2025

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514