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Published on July 13, 2021

High Sensitivity Troponin I - SERIAL

Tube Type = Mint Green Plasma Separator Tube

Tube Type

Test ID LAB10093
EPIC Order
 HIGH SENSITIVITY TROPONIN I - SERIAL
CPT Code(s) 84484
Group/Individual Test Individual
Laboratory Core Laboratory
Tube Station Routine: 30; STAT: 888
Specimen Routine: 4 mL blood/green lithium heparin gel tube. Also acceptable gold SST or red plain tube
Micro: 1 mL blood/mint green top bullet/gold top/red top
Stability
Unspun: <2 hours recommended
Spun/Separated, Room Temp-</=8 hrs recommended
Spun/Separated, Refrigerator: 24 hours
Spun/Separated, Frozen: 40 days
Availability Routine: 24 hrs/day
STAT: Yes
Turnaround Time Routine: 2 hours; STAT: 1 hour
Reference Range Normal:
hsTroponin I (99th Percentile) ng/L
Male ≤53
Female or Unspecified ≤34
Critical:
Male >53 ng/L
Female or Unspecified >34 ng/L
Comments

Please refer to the UNC Health System Chest Pain Tool Kit for full guidance on troponin testing.

Reviewed by J. Carr on January 13, 2026

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