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.
if the tsh level is less than 0 3 the condition can be diagnosed as an overactive thyroid or hyperthyroid if the tsh level is above 3 then the condition is referred to underactive thyroid or hypothyroid the normal range for total t4 or total thyroxine is around 4 5 to 12 5he commonly preferred range of thyroid stimulating hormone tsh at most labs can be from 0 5 to 5 5 however some experts follow the recently updated reference range of 0 3 to 3 0