The process ofageing is to a large extent due to the damagingconsequence of free radical action (lipid peroxidation,DNA damage, protein oxidation) (Harman, 1956).Convincing evidence for the association ofoxidative/ nitrosative stress and acute and chronicdiseases lies on validated biomarkers of oxidativestress.
The radioactive iodine uptake test, or RAIU test, is a type of scan used in the diagnosis of thyroid problems, particularly hyperthyroidism.he normal uptake is between 15 and 25 percent, but this may be forced down if, in the meantime, the patient has eaten foods high in iodine, such as dairy products and seafood. Low uptake suggests thyroiditis, high uptake suggests Graves' disease, and unevenness in uptake suggests the presence of a nodule.
Normal Reference Ranges for Thyroid Lab Tests. The diagnosis of a hyperactive or hypoactive thyroid is confirmed by a physical examination and laboratory tests. The thyroid test measures the levels of T3, T4, and TSH. Learn about these hormones and know what the normal thyroid lab test reference range is. 1  slide 1 of 4. The Thyroid Gland The thyroid gland is part of the endocrine system and is located in the front of the neck. 2  slide 2 of 4.