Free Thyroxine (T4)

Synonyms

  • FREE THYROXINE (T4)
  • FT4
  • LAB127
  • THYROID

Cerner Name

Thyroxine-Free

Clinical Info

Specimen Sources

Blood, Arterial Blood, Capillary Blood, Central Line Blood, Venous

Specimen Types

Blood

Specimen Volume

1 mL of serum

Container

Gold Top Tube

Collection Instructions

Container/Tube: Gold-top tube(s)
Specimen: 1 mL of serum

Transport Instructions

Refrigerate

Specimen Stability

5 Days Room Temperature
7 Days Refrigerated
30 Days Frozen

Methodology

Electrochemiluminescence Immunoassay (ECLIA)

Days Performed

Monday through Sunday, Continuously

Performing Laboratories

Northwell Health Laboratories

CPT

84439

PDM

5300445

Results
Component Name Base Name Common Name External Name
FREE THYROXINE, SERUM FREET4 FREE T4 Free T4

Result Interpretation

0.9-1.8 ng/dL

Forms
Endocrine LAB127 build edit