Triidothyronine-Free (FT3), Serum
- Reporting Time:
- 6 Hrs
- Specimen Type:
- Home Collection:
- No special preparation required
To screen for thyroid disorders and to monitor treatment of hypothyroidism and hyperthyroidism.
When suspecting or when there are signs and symptoms of hyperthyroidism. When TSH levels are abnormal with a normal free T4 result.
1. Does pregnancy affect thyroid hormone levels?
Pregnancy can increase free T3 levels physiologically without any underlying thyroid disease.
2. Can free T3 levels be raised or lowered?
Generally free T3 does not respond to lifestyle changes. However free T3 levels can be raised with hormone replacement therapy.