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