T4, FREE, DIRECT DIALYSIS

Code
000.0000
Name
T4, FREE, DIRECT DIALYSIS
Category
None
Department
Send-Out
Start Date
Expiration Date
Synonyms
Free Thyroxine by Equilibrium Dialysis
CPT Codes
84439
Site
SBMF
Reference Test
45360
ATLAS Test Code

Specimen Information

Type

Red, Plain

Volume

2.0 ml

Transport Info

Centrifuge and immediately transfer serum to separate plastic tube
Refrigerated

Fasting Required?
False
Patient Instructions

Reference Range

See Report

Methodology

Quantitative Equilibrium Dialysis/High Performance Liquid Chromatography-Tandem Mass Spectrometry

Clinical Significance

Free T4 is useful in the distinguishing euthyroidism from thyroid disease.

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