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Test Code TT4 T4, TOTAL

Important Note

Test subject to Medicare National Coverage Determination (NCD) 190.22 - Thyroid Testing.

Additional Codes

Primary ID

Epic Code

Mayo Access ID

TT4

LAB126 FAH5787

 

Specimen Information

Container

Specimen

Temperature

Collect Vol

Submit Vol

Minimum Vol

Stability
SST Serum Refrigerate 4 mL 0.5 mL 0.2 mL 5 days
Lithium Heparin (green top) Plasma Refrigerate 4 mL 0.5 mL 0.2 mL 5 days
*Green Microtainer   Refrigerate 0.6 mL     5 days

*While a microtainer is an optional tube type in rare circumstances, it is not recommended.

Test Schedule / Analytical Time / Test Priority

Daily / Same day / Available STAT

Method

Chemiluminescence Immunoassay

CPT(s)

Description CPT Code
T4 84436

 

Instrumentation

Ortho Vitros 5600

Reference Range

Age Sex Physiological Status Low High Units
0 - 4 days All   8.0 20.0 ug/dL
4 days - 1 month All   5.0 15.0 ug/dL
1 month - 1 year All   6.0 14.0 ug/dL
1 - 6 years All   4.5 11.0 ug/dL
6 - 18 years All   4.5 10.0 ug/dL
≥18 years All   5.5 11.0 ug/dL

 

Section

Chemistry-1

Performing Location

University of Vermont Medical Center

Is the UVMMC lab NY State Certified to perform this testing?  Yes/No

Yes

LOINC Code Information

Result Code Reporting Name LOINC Code
TT4 T4 3026-2