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.
Do not eat or drink anything other than water (no coffee, tea, juice, etc.) for the 6 hour period prior to your scan. Chewing gum or breath mints (even the diet kind) are also excluded. There is no limit on the amount of water you can drink (actually, the more water, the better).