The instruments of Renaissance music Musical instruments have been in use for millennia, but their place in the music of the Middle Ages and Renaissance was often sharply defined and restricted. In the view of the MediÃ¦val church, the human voice was an instrument created by God, and thus more able to sing His glories than instruments created by people.
Low total calcium (hypocalcemia). The most common cause of low total calcium is: 1  Low blood protein levels, especially a low level of albumin, which can result from liver disease or malnutrition, both of which may result from alcoholism or other illnesses.2  Low albumin is also very common in people who are acutely ill. urine calcium test may be ordered when someone has symptoms of kidney stones, such as a sharp pain in the person's side or back around the kidneys, pain that may progress to lower in the abdomen, and/or blood in the urine.
When blood calcium levels get low (hypocalcemia), the bones release calcium to bring it back to a good blood level. When blood calcium levels get high (hypercalcemia), the extra calcium is stored in the bones or passed out of the body in urine and stool. The amount of calcium in the body depends on the amount of:hey also control the amount of calcium you absorb from food and the amount passed from the body in urine. The blood levels of phosphate are closely linked to calcium levels and they work in opposite ways: As blood calcium levels get high, phosphate levels get low, and the opposite is also true.