Description
Thyroid hormone (TH) is required for normal development as well as regulating metabolism in the adult.
It also plays an important role in regulating your weight, body temperature, muscle strength, and even your mood.
T3 Uptake - Decreased: Pregnancy, estrogens, hyperproteinemia, acute intermittent porphyria.
Increased: Androgens, hyperproteinemia, stress, acute liver disease.
This assay is a measure of available thyroid hormone binding sites and should be interpreted with thyroxine levels.
Triiodothyronine or T3 is a hormone produced by the thyroid. Thyroid hormones exist in two forms: either protein-bound TBG or free which is not attached to a protein.
T3 resin uptake (called a T3 uptake or T3RU) is a blood test performed as part of an evaluation of thyroid function.
T3 uptake test helps to estimate the amount of TBG in the blood, and how much T4 and T3 in the blood is free form and available to affect the body.
