Free T4


Test Information

Test Name

Free T4

Synonyms

FT4; Free Thyroxine; T4; Eltroxin

Department

Biochemistry

Price

$15.00

Price Disclaimer

Many services are free for eligible patients. A minimum charge may apply. Prices listed are for unfunded, individual, requests. Please contact us for commercial testing.

Preferred Specimen

SST

Testing Location

PLW; PLBOP; PLR

Turn Around Time

1 Day


Collection Information

Patient Requestable

Yes


Processing Information

Registration Code

FT4

Notes

Pregnancy reference ranges as below:

  • Please note: Changes in TSH and FT4 during pregnancy are gradual. The reference intervals quotes cannot capture these gradual changes.
  • The Reference intervals quotes have significant uncertainty and are only an approximate guide to interpretation of TSH and FT4 during pregnancy.
  • Beckman FT3: Trimester-specific reference intervals are not available, suggest the use of adult values.

Site Specific Notes

- Whakatane

Process in PLBOP Biochemistry

- Taupo

Process in PLBOP Biochemistry

Alternative Specimen

Lithium Heparin, Plain tube


Methodology

Sample Storage

Fridge

Sample Stability

1 week

Interpretations

View Interpretations