- BGC Branch
8F & 23F Ore Central Tower, 9th Avenue, cor 31st Street, Taguig City, 1630 Metro Manila
- In Clinic

The T4 test measures thyroxine, a hormone that plays a vital role in regulating metabolism, energy, and growth. It helps diagnose thyroid conditions like hypothyroidism or hyperthyroidism, especially when symptoms such as fatigue, weight changes, or neck swelling are present.
Often used with TSH and T3, this test is also helpful for monitoring thyroid treatment or screening those with a history of thyroid issues.
Other Names: Total triiodothyronine, TT4
No fasting required.
Do not take Biotin (Vitamin B7) for 8 hours prior to extraction.
For patients taking medicines to lower cholesterol (D-T4), medication should be discontinued for 4-6 weeks prior to collection (please consult your doctor before following this preparation).
Earliest availability and prices are shown upfront.
8F & 23F Ore Central Tower, 9th Avenue, cor 31st Street, Taguig City, 1630 Metro Manila

