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Test Code 158018694 FT4 (Thyroxine, Free) Neonate (<1 Month)

Important Note

Test performed at Torrance Memorial Laboratories as of 2/23/16

Specimen Requirements

Please submit one of the following specimens:


Specimen Type: Serum
Container/Tube: Serum gel

Spin Instructions:  Allow to sit for 30 minutes prior to spinning.  Spin within 2 hours of collection.

 

Specimen Transport Temperature

Ambient

 

Storage Temp Stability:  Serum

Room Temperature:  12 hours

Refrigerated:  7 days

Methodology

LOCI - Luminescent Oxygen Channeling Immunoassay

Reference Range

Reference ranges for neonatal T4 have not been established. Results are reported for therapeutic purposes only, and should be interpreted in conjunction with TSH results. 

Day(s) Test Set Up/TAT

Performed: 

Daily

Available STAT

 

TAT:

STAT:  < 1 hr

Routine:  < 4 hrs

CPT Code

84439

Aliases

Free T4 Neonate