Free Thyroxine by Equilibrium Dialysis

Synonyms

  • LAB3037
  • T4, FREE, DIRECT DIALYSIS

Cerner Name

Free T4 Dialysis

Clinical Info

Specimen Sources

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

Specimen Types

Blood

Specimen Volume

1 mL of serum ( 0.5 mL min)

Container

Red Top Tube

Collection Instructions

Container/Tube:  Gold-top tube(s) or Red-to tube(s)
Specimen:  1 mL of serum ( 0.5 mL min)
Transport Temperature:  Freeze
*DO NOT FREEZE IF UNABLE TO CENTRIFUGE*

Transport Instructions

Freeze

Specimen Stability

Methodology

Direct dialysis mass spectrometry; high-pressure liquid chromatography/mass spectrometry (HPLC/MS)
 

Days Performed

Tuesday, Friday

Performing Laboratories

Labcorp-Esoterix

CPT

84439

PDM

5910668

Results
Component Name Base Name Common Name External Name
FT4 DIALYSIS FREET4 FT4 DIALYSIS FT4 Dialysis
T4, SERUM T4 T4 Total T4
FREE T4 DIALYSIS RESULT FREET4 FREE T4 DIALYSIS Free T4 Dialysis

Result Interpretation

 

Age Range ng/dL
Premature (0-4 wk) 0.86-4.46
Newborn (0-2 wk) 0.84-4.97
Newborn (2 wk to 12 mo) 0.81-2.12
1-11 y 0.65-1.9
Pubertal children and adults 0.8-1.7
Pregnant Females
First trimester (0-13.3 wk) 0.65-1.4
Second trimester (13.4-26.6 wk) 0.5-1.3
Third trimester (>26.6 wk) 0.5-1.1

 

Forms
Endocrine LAB3037 build edit