The spheres are merely there to show (to yourself and your visitors) that your dragons are higher than level ten. The shrines will show that your dragons are able to level past ten (or fifteen if it's gold), but the orbs show for each particular dragon that is above level 10.
Hemoglobin is what actually gives your red blood cells the ability to carry oxygen. A high hematocrit simply means that you have a higher concentration of hemoglobin in the blood. First of all, it could indicate dehydration, or normal amount of hemoglobin, but too little blood (plasma) volume. If this is the case, depending on how high the hematocrit is, rehydration might be needed.
The term hematocrit means to separate blood.. When the patient's blood sample is spun in a centrifuge, the white blood cells and platelets rise to the top in what is known as the buffy coat.. The heavier red blood cells sink to the bottom, where they can be calculated as a percentage of the total blood sample. Normal hematocrit values are: