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Test Code FRET4 T4, FREE

Important Note

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

Additional Codes

Primary ID

Epic Code

Mayo Access ID

FRET4

LAB127 FAH5788

 

Specimen Information

Container

Specimen

Temperature

Collect Vol

Submit Vol

Minimum Vol

Stability
SST Serum

Refrigerate

4 mL 0.5 mL 0.2 mL 7 days
*Yellow Microtainer   Refrigerate 0.6 mL     7 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, Free 84439

 

Instrumentation

Ortho Vitros 5600

Reference Range

Age Sex Physiological Status Low High Units
0 - 4 days All   2.0 5.0 ng/dL
4 days - 1 month All   0.9 2.2 ng/dL
1 month - 18 years All   0.8 2.0 ng/dL
≥18 years All   0.8 2.2 ng/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
FRET4 T4, Free 3024-7