Free T4 Index


Test Information

Test Name

Free T4 Index

Synonyms

Free Thyroxine Index

Preferred Specimen

SST

Testing Location

Referral

Turn Around Time

5 days


Processing Information

Registration Code

MISS

Notes

  • FTI is calculated by measuring Thyroid Uptake (TU) and multiplying by TT4

    Min. 1.0mL serum, ideally 1.5mL serum. This volume allows all total thyroid function tests to be performed.

Alternative Specimen

Heparin or Plain tube


Methodology

Contact Information

john.woodford@pathlab.co.nz

External Referral Information

Referral Location

Canterbury Health Laboratory (via WHL)

Send Away Transport

Frozen

External Lab Website