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.
Dr_ Vouyiouklis: Sluggishness can be seen in patients with hypothyroidism (underactive thyroid). If the TSH is in the normal range of 0.4-4.5 (depending on the laboratory), it is less likely that your symptoms are a result of this.TSH is a very sensitive marker for thyroid function, so while a free T4 may be additional useful information, a TSH should be able to indicate if there is thyroid dysfunction.our TSH at 5.1 remains slightly elevated, so you should probably have your dose adjusted. Please note that the TSH range is wide. Also, it can take up to six weeks to three months to see changes in thyroid function, and it can sometimes take time to see a complete response to the medication.