T4, FREE BY DIALYSIS

Synonyms: Thyroxine, Free by Dialysis; Free Thyroxine by Dialysis; Free T4 by Dialysis
Computer Code: (RFTDE )
Specimen Collection: 4 mL blood (red or lavender top tube). Send to special chemistry immediately.
Minimum Volume: 1 mL
Handling Instructions for Offsite Areas: Serum: Allow to clot, centrifuge, remove serum, freeze. Plasma: centrifuge, remove plasma, freeze. Pediatric min. 0.4 mL serum or plasma. Separate within 1 hour of collection. Adult min. 0.5 mL serum or plasma.
Reference Values: See reference laboratory report.
Lab Code: CC REF
Requisition: SPEC C
Test Frequency: NA
Routine TAT: 7 days
Stat TAT: N/A
CPT Code(s): 84439
LCD or NCD:
Methodology Used:
See Addendum XVII