cystine

Cystine is the basic unit of protein, and is one of the 21 amino acids that make up human protein. The amino acids are all amino acids except the amino acids. The amino acids constituting the protein molecule are all L-amino acids, but in recent years it has been confirmed that they can be isomeric as D-amino acids, and the specific mechanism has not been studied. Basic Information Specialist classification: growth and development check classification: biochemical examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: No clinical significance. Normal value: Cystine: 4.40-11.52μmol/L Above normal: Cystineuria. negative: Positive: Tips: Do not eat too greasy, high-protein foods the day before the blood draw, avoid heavy drinking. The alcohol content in the blood directly affects the test results. Normal value 4.40 to 11.52 μmol/L. Clinical significance Cysturia is caused by the lack of renal tubular basic amino acid carriers on the renal cell membrane of patients, and the secretion of cystine, arginine, lysine and ornithine in the urine of patients can be increased. Patients with clinical manifestations of ectopic lens, convulsions, mental retardation, arteriovenous thrombosis, etc., may also have similar limbs, spider-like fingers, thoracic deformity, spinal deformity, osteoporosis, etc. similar to Marfan's syndrome a symptom. High results may be diseases: homocycyuria, lens ectopic precautions Before inspection: 1, do not eat too greasy, high-protein food the day before the blood, to avoid heavy drinking. The alcohol content in the blood directly affects the test results. 2. After 8 pm on the day before the medical examination, you should start fasting for 12 hours to avoid affecting the test results. 3, should relax when taking blood, to avoid the contraction of blood vessels caused by fear, increase the difficulty of blood collection. After inspection: 1. After blood is drawn, local compression is required at the pinhole for 3-5 minutes to stop bleeding. Note: Do not rub, so as not to cause subcutaneous hematoma. 2, the pressing time should be sufficient. There is a difference in clotting time for each person, and some people need a little longer to clotting. Therefore, when the surface of the skin appears to be bleeding, the compression is stopped immediately, and the blood may be infiltrated into the skin due to incomplete hemostasis. Therefore, the compression time is longer to completely stop bleeding. If there is a tendency to bleed, the compression time should be extended. 3, after the blood draw symptoms of fainting such as: dizziness, vertigo, fatigue, etc. should immediately lie down, drink a small amount of syrup, and then undergo a physical examination after the symptoms are relieved. 4. If there is localized congestion, use a warm towel after 24 hours to promote absorption. Inspection process The examination process: blood is drawn, blood is taken for examination, and venous blood is generally taken, and blood is drawn by a doctor or a nurse. The amount of blood drawn is determined according to the difference of the test content and the number of items. The blood volume is generally 2-20 ml. The color test of the polysaccharide was carried out by a doctor after the blood was taken. Not suitable for the crowd no. Adverse reactions and risks no.