There are different types of casts and the number and type can tell if you have kidney problems or not also all these things such as cells, casts, crystals, and skin cells (epithelial cells
) make up the sediment. Everyone has some sediment after they centrifuge the urine
. Yours has quite a bit. It may be due to your kidneys, or kidney stones, or too many skin cells etc. So, the microscopic exam of the sediment should tell the lab tech what is going on and they tell the doctor what they see.