As you know from this article a normal TSH range depending on the lab is around 0.5 to 5.0 which is why your TSH of 4.46 was determined normal, however the very fact that your first TSH test showed up 6.49 should be reason to investigate further.
Liver Ultrasound Preparation guidelines. 1  Do not drink or eat at least 6 hours before the test. 2  On the day before the test, do not eat â fresh fruits and vegetables, fried and oily food, milk, eggs, bread. 3  What you should eat â cooked vegetables, puree, marmalade, honey, roasted bread, soup, and rice.
Is fasting necessary before a renal ultrasound? Yes, you need to fast 6 hours before the exam. Also in order to  have a full bladder for the procedure, you should drink at least  16-32 ounces of water 30 mins to an hour bâ¦efore the exam. That is  at least one- two water bottles.