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 of late 2016 at most laboratories in the u s the official reference range for the thyroid stimulating hormone tsh blood test runs from approximately 0 5 to 4 5 5 0 the reference range also sometimes called the normal range is an important part of the complete picture of thyroid diagnosis and treatment in fact the entire tsh test as diagnostic and management tool depends on this validity