Sign in →

Test Code FT4 T4, Free

Collection Container

Serum gel

Specimen Required

Serum

Other Acceptable Specimen Types

Heparinized and EDTA plasma

Specimen Volume

1 mL

Minimum Specimen Volume

0.5 mL

Transport Temperature

Refrigerate

Specimen Stability

Refrigerated: 5days, Refrigerate: 7 days, Frozen: 30 days freeze/thaw cycle: 1

Methodology

Electrochemiluminescence immunoassay (ECLIA)

Days and Times Performed

Test performed daily

Turnaround Time

24 hours

Reference Ranges

Male and Female: 0.70 - 1.80 ng/dL

Units of Measure

ng/dL

CPT Code

84439

EMR Interface Order Code

27575