The normal value of blood calcium is 9mdash;11 mg of calcium in 100 ml of blood, which is 2.2mdash;2.7 millimolar concentration per liter of blood. The test of blood calcium ions can determine the possibility of many diseases. So what are the tests for high calcium ions in the blood? Here is a brief introduction. Blood calcium ion high test methods Clinical manifestations 1, urinary system: about 2/3 of patients can have kidney damage, commonly recurrent urinary tract stones, renal colic, hematuria, especially bilateral urinary tract stones in about 5%-10% of patients with this disease. The decrease in renal tubular concentration produces polyuria and polydipsia, which, together with the increase in blood calcium, can lead to urinary collapse in severe cases. The destruction of renal tubular structure is prone to recurrent urinary tract infections, which eventually leads to the reduction of renal units and irreversible renal failure. 2, digestive system: high blood calcium makes smooth muscle excitability decrease, gastrointestinal tone is reduced. PTH can increase gastrin secretion by about 10%, which may be accompanied by recurrent peptic ulcers, and drug treatment is ineffective. Removal of parathyroid adenoma can lead to healing. Calcium ions are easily deposited in the alkaline pancreatic ducts and pancreas, activating pancreatic protease and causing acute and chronic pancreatitis attacks in 5%-10% of patients. 3, cardiovascular system: hypertension causes vascular smooth muscle contraction, vascular calcification, forming hypertension, the incidence of 20%-25%, endocardial and myocardial calcification to reduce cardiac function. 4, muscle system: muscle weakness, with proximal muscle groups susceptible to involvement, proximal muscle pain, atrophy, muscle biopsy shows non-specific changes. Electromyography can be reported as myogenic or neurogenic, which can be misdiagnosed as peripheral neuritis.