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.
Normal Thyroid Lab Test Reference Range Here are the normal ranges for thyroid tests according to Rush University Medical Center: TSH = 0.350 - 4.940 ÂµIU/ml. Total T3 = 0.6 - 1.6 ng/ml. Total T4 = 4.9 - 11.7 mg/dl. Free T3 = 1.7 - 3.7 pg/ml.