So if you have been told your thyroid gland died or stopped working, ask your doctor to explain why. Make sure you have had the proper testing including a complete thyroid panel and thyroid antibody tests run. The antibody tests will catch 80-90% of the patients with Hashimotoâs.
The F-test is designed to test if two population variances are equal. It does this by comparing the ratio of two variances. So, if the variances are equal, the ratio of the variances will be 1. If the null hypothesis is true, then the F test-statistic given above can be simplified (dramatically). This ratio of sample variances will be test statistic used. If the null hypothesis is false, then we will reject the null hypothesis that the ratio was equal to 1 and our assumption that they were equal.
A FOBT is a lab test used to check your stool (feces) for occult blood. Occult blood is blood that canât be seen just by looking at the stool sample. There are many reasons you may have blood in your stool. Your doctor or nurse will tell you why you are having the test. You will collect samples of your stool for 3 days in a row.