Recombinant human growth hormone (rhGH) injection method I. Dosage form Growth hormone powder injection: It is a white powder with special liquid to dissolve. Since the growth hormone molecule is a structure of 191 amino acid chains, when dissolving the drug, the solution should flow gently from the wall of the vial, and then twist the vial gently and slowly with both hands to make the drug dissolve. The solution should not be injected into the vial containing the drug with great pressure, and should not be shaken with force to avoid damaging the natural structure of growth hormone and affecting its efficacy. The packaging of growth hormone drugs is not exactly the same from one pharmaceutical company to another, and the common ones are 2.5, 4, 10, 16 units per vial, etc. Growth hormone water injection: In recent years, Changchun Jinsai Company in China has also developed growth hormone water injection, which can be used directly without the need of dissolving configuration before injection, bringing convenience to children with dwarfism and their parents. In general, growth hormone drugs should be kept in a refrigerator at 2-8 ℃, that is, refrigerated, and not frozen! If you go out, you can prepare a small ice jug to carry with you. Parents or children can learn how to inject the drug, and the family or children can inject the drug themselves. Growth hormone must be administered by subcutaneous injection. Clinical studies over the years have found that once daily subcutaneous injection is the most effective and safe method. After years of research, the dose of growth hormone for treating children with growth hormone deficiency is generally 0.1IU/Kg (0.1 unit per kg per day). 1 unit per day). For example, for a child weighing 20 kg, 2 units of growth hormone can be injected subcutaneously every day. The dose may be increased according to the child’s condition. Growth hormone is usually injected at night. Subcutaneous injections can be given around the umbilicus of the abdomen, in the outer upper quadrant of the buttocks, in the near-center half of the area between the g-joint and the knee joint on the front and outer thighs, and in the near-center half of the area between the shoulder and elbow joints on the outside of the forearm, i.e., avoiding injections near the joints. Rotating the injection site regularly can avoid local problems such as swelling and pain.