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.
In general terms, ultrasound for a cat is safe because it is non-invasive, as noted by Cat Care Clinic As with any medical procedure, some preparation might be necessary. In the case of an abdominal ultrasound, VCA Animal Hospitals suggests that owners withhold food for at least 12 hours before the scan.