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
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.