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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.

Caffeine

Tube Type

Test ID		LAB706
EPIC Order		CAFFEINE LEVEL
CPT Code(s)		80155
Group/Individual Test		Individual
Laboratory		Core Referral testing
Tube Station		30
Specimen	Routine:	3 mL blood/gold SST tube/red top also acceptable
	Micro:	1 mL - blood
Availability	Routine:	Reference Laboratory - MAYO
Turnaround Time		2-3 days
Reference Range		See Separate Report.
Comments		Collection Information: Caffeine samples should be collected as trough level immediately before the next dose.

Reviewed by J. Carr on December 01, 2025

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