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
Hi-Precision PlusNo 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.
Lot4-E Aguinaldo Highway, Pasong Tala, Zone 4, Dasmariñas, Cavite City
3F Commercecenter Bldg. 31st St. and 4th Avenue, Fort Bonifacio Global City Taguig