- Reporting Time:
- 6 Hrs
- Specimen Type:
- Home Collection:
- No special preparation required
To help evaluate thyroid gland function, diagnose thyroid disease, screen for hypothyroidism in newborns and to monitor effectiveness of treatment.
When there are signs and symptoms of thyroid disease, an abnormal TSH test result, as a screening test on newborns, while being treated for a thyroid disorders.
1. Does pregnancy affect thyroid hormone levels?
Pregnancy can increase free T4 levels physiologically without any underlying thyroid disease.
2. Can free T4 levels be raised or lowered?
Generally free T4 does not respond to lifestyle changes. However free T4 levels can be raised with hormone replacement therapy.