Laboratory test
Free Thyroid Function Test (FTFT)
Free Thyroid Function Test (FTFT): 3 parameters from a blood sample, no fasting.
Also known as
Free Thyroid Profile (FT3 · FT4 · TSH)
- Sample
- Blood
- Fasting
- Not required
- Expected report time
- 24–48 hours
- Parameters
- 3
What is the Free Thyroid Function Test (FTFT)?
Free Thyroid Function Test (FTFT) includes Free T3 (FT3), Free T4 (FT4), TSH (Thyroid Stimulating Hormone). The listed sample is Blood (Serum). The parameter table provides the available units and method details. Discuss the measurements with your clinician in the context of the investigations requested.
What does the Free Thyroid Function Test (FTFT) measure?
3 parameters. Expand a group to see the measurements, units and available method details.
Other measurements2 parameters
| Parameter | Unit | LOINC |
|---|---|---|
| Free T3 (FT3) | pg/mL | 3051-0 |
| Free T4 (FT4) | ng/dL | 3024-7 |
Thyroid1 parameter
| Parameter | Unit | Catalogue method | LOINC |
|---|---|---|---|
| TSH (Thyroid Stimulating Hormone) | µIU/mL | C.M.I.A | 3016-3 |
The reference interval printed on your actual laboratory report governs interpretation. Intervals can vary by laboratory, method, age, sex and pregnancy. Methods can also vary by processing laboratory.
Free Thyroid Function Test (FTFT): sample & preparation
Sample: Blood. Fasting: Not required.
- You do not need to fast for this test. Continue your thyroid medicines as usual unless your doctor tells you to stop, and mention any thyroid medicine you take when the sample is collected.
Frequently asked questions
Can I book this test for home collection?
When is the report expected?
Can I book this with other tests?
Book the Free Thyroid Function Test (FTFT)
3 parameters · No fasting required · Report time: 24–48 hours
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