There are two main methods to find out calcium deficiency: first, blood tests to see the blood calcium, blood calcium in general in the blood biochemistry can effectively determine whether in the case of calcium deficiency, in the clinical most commonly used. Second, you can take a film to see if there is a decrease in bone density, which is often caused by calcium loss, and can also play a role in determining. After a calcium deficiency, it often causes osteoporosis, cramps and weakness in the body, after this situation, we generally have to take oral and intravenous calcium supplementation, oral calcium supplementation can eat some food containing high calcium ions, such as meat, milk and bone broth, etc., you can also roast fish bones, rolled into powder, can also play the effect of calcium, but also oral calcium gluconate or calcium carbonate D3 chewable tablets, can also be a good calcium supplement. If the oral effect is not good, you can take intravenous calcium, such as calcium gluconate injection, calcium chloride injection, can also play a role in calcium supplementation. In addition, more sunshine and outdoor exercise can also help the body’s absorption of calcium ions.