Inpatient and Outpatient Orderable

Free Thyroxine by Equilibrium Dialysis Build info

Synonyms

  • T4, FREE, DIRECT DIALYSIS
  • LAB3037

Procedure Name

T4, FREE, DIRECT DIALYSIS

Procedure Master Number

LAB3037

Procedure ID

172753

Clinical Info

Specimen Sources

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

Specimen Types

 Blood

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
-

Specimen Volume

1 mL of serum ( 0.5 mL min)

Transport Instructions

Freeze

Specimen Stability

Methodology

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

Days Performed

Tuesday, Friday

Performing Laboratory

Labcorp-Esoterix

CPT

84439

PDM

 5910668

Only Orderable at Locations:

 Orderable Everywhere

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
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