Vaccine information, visitor restrictions, and additional resources | Medicaid: The program is changing and you must take steps to keep your UNC Health providers

Triiodothyronine T3 (Total)

Mint Green Plasma Separator Tube

Tube Type

Test ID   LAB136
EPIC Order
CPT Code(s)   84480
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   30
Specimen Routine: 4 mL blood/Li Heparin plasma separator tube/Mint Green top. Also acceptable serum (Gold SST / Red Top Tube)
  Micro: 2 microcollection devices/900 µL blood/mint green top bullet/gold top/red top
Unspun: 8 hours
Spun/separated, Room Temp-</= 8 hrs recommended
Spun/separated, Refrigerator: 7 days
Spun/separated, Frozen: 4 weeks
Availability Routine: 24 hrs/day
Turnaround Time   2 hours
Reference Range Normal: 1.0-1.7 ng/mL
Comments Testing is performed usning the Siemens Atellica T3 Assay.  Heterophilic antibodies may cause interference.

Reviewed by jcarr on December 16, 2019

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

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