The hematocrit blood test determines the percentage of red blood cells (RBC's) in the blood. Blood is composed mainly of red blood cells and white blood cells suspended in an almost clear fluid called serum. The hematocrit test indicates the percentage of blood by volume that is composed of red blood cells. The condition called anemia results from having too few red blood cells. Anemia causes a variety of symptoms. The hematocrit is a basic test that can tell a physician a lot about a person's health.
Preheat the oven to 400 degrees F (204 degrees C). Place the short ribs on a baking sheet, season with salt and pepper, and roast in the oven for 15 minutes. Remove the ribs from the oven, and then reduce oven temperature to 300 degrees F (149 degrees C).
1 Place the ribs in the oven. 2  Cook ribs for 2-1/2 to 4 hours. 3  After about 2-1/2 hours, open a corner of one of your foil packets and test the ribs with a fork. 4  If they are tender, move on to step 5.5  Otherwise, allow them to continue to cook until they are fork tender.tep-by-Step Guide for Cooking Pork Ribs in an Oven. The best thing about pork ribs cooked in the oven is that, after minimal prep, you can put them in the oven and walk away for several hours. It doesn't get any better than that. Learning how to cook pork ribs in the oven is really easy.