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.
The official normal range of TSH followed by many doctors and laboratories until 2002 was from between 0.5 to 5. According to this TSH range, a TSH over 5 indicated an under active thyroid (or hypothyroidism); while a low TSH value below0.5 indicated an overactive thyroid or (hyperthyroidism).