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Transthyretin (Prealbumin)

Transthyretin

Tube Type = Mint Green Top

Tube Type

Test ID   LAB115
EPIC Order
   PREALBUMIN (TTR)
CPT Code(s)   84134
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   Routine: 30; STAT: 888
Specimen Routine: 2 mL blood/green lithium heparin gel tube. Also, acceptable gold SST or red plain tube
  Micro: 500 µL blood/mint green top bullet/gold top/red top
Stability
Unspun: 2 hours recommended
Spun/separated, Room Temperature:8 hours
Spun/separated, Refrigerator: 2 days
Frozen: 1 month
Availability Routine: 24 hrs/day
  STAT: Yes; if stat need, 1 hour TAT
Turnaround Time Routine: 2 hours
Reference Range Normal: 10.0-40.0 mg/dL
Comments Reference Range effective 7/13/2021

Reviewed by J. Carr on January 02, 2026

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