Lipid Definition Lipids are class of naturally-occurring organic compounds that you may know by their common names: fats and oils. A key characteristic of this group of compounds is that they are not soluble in water.
Ultrasound. 1  normal thyroid gland has an homogenous appearance, the capsule may appear as a thin hyperechoic line. 2  each lobe normally measures 4 length: 4-7 cm. depth: <2 cm. 3  volume (excluding isthmus, unless its thickness is > 3mm) 6 10-15 ml for females. 12-18 ml for males.
As we can see from the chart, TSH levels normal range is 0.4 - 4.0 mIU/L. Yet, people without signs of abnormal thyroid, showing TSH result 2.0 mIU/L and normal T4 test results, may acquire thyroid problems later, such as hypothyroidism.