About this test
Hypo- / hyperthyroidism diagnosis; levothyroxine titration; antenatal screening.
Parameters
1 parameter available in the current test details.
- Free Thyroxine (T4, Free)
Sample & preparation
- Sample
- Serum
- Sample volume
- 2–3 mL
- Preparation
- Fasting (usually overnight)
- Transport temperature
- 2–8 °C
- Expected report time
- Same day
Confirm preparation and reporting time with OnePLUS when booking. Your referring clinician can advise which investigation is appropriate.