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.
Fecal Occult Blood Test (FOBT) The fecal occult blood test (FOBT) is a type of screening that could indicate colorectal cancer, but not diagnose it. This test checks for blood in the stool which cannot be seen with the naked eye. If blood is detected, additional testing would be required to determine the source of the blood. Fecal occult blood testing is what is known as a qualitative test. It only detects the presence or absence of blood. If blood is present, the test cannot evaluate how much blood is in the stool.