Serum Phosphorus (Pi)

The human body needs about 1.2 grams per day. The phosphorus ingested by the diet is mainly absorbed in the jejunum, and about 80% of the phosphorus is stored in the bone in the form of calcium phosphate. The human body contains 17 mol (530 g) of phosphorus, 87% of which is present in the bone, and the rest in the soft tissue and in the cells. Many important substances in the body such as certain proteins, lipid compounds, nucleic acids, and coenzymes all contain phosphorus. Phosphate also plays an important role in acid-base balance. Phosphorus symbol: P; its atomic weight: 30.97. Phosphate form: H2PO4-, HPO42- Its molecular weight: 96.98, 95.97, respectively. Basic Information Specialist classification: inspection classification: biochemical examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: Reduced in hyperparathyroidism, vitamin D deficiency, rickets, severe diabetes, phosphorus absorption and so on. It can also be slightly reduced during normal pregnancy. When taking drugs containing aluminum antacids, synthetic estrogens, birth control pills, and phenobarbital, blood phosphorus is also reduced. Normal value: Adult: 0.97-1.62mmol/L Children: 1.29-1.94mmol/L Above normal: Increased in parathyroid hypofunction, chronic kidney disease, vitamin D hyperactivity, multiple myeloma, lymphoma, leukemia, fracture healing period. When using androgen, synthetic hormones and certain diuretic drugs, blood phosphorus will also increase. 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. After 8 pm on the day before the medical examination, fasting should be done to avoid affecting the detection of indicators such as blood glucose in the second sky. Normal value Adults are 0.97 to 1.62 mmol/L (3.0 to 5.0 mg/dl). Children 1.29 ~ 1.94 mmol / liter (4.0 ~ 6.0 mg / dl). Clinical significance 1, increased in parathyroid hypofunction, chronic kidney disease, vitamin D hyperactivity, multiple myeloma, lymphoma, leukemia, fracture healing period. When using androgen, synthetic hormones and certain diuretic drugs, blood phosphorus will also increase. 2, reduced in hyperparathyroidism, vitamin D deficiency, rickets, severe diabetes, phosphorus absorption and so on. It can also be slightly reduced during normal pregnancy. When taking drugs containing aluminum antacids, synthetic estrogens, birth control pills, and phenobarbital, blood phosphorus is also reduced. Low results may be diseases: fibrotic osteitis, neonatal rickets, primary hyperparathyroidism in children, primary hyperparathyroidism and high nephropathy may be diseases: malignant bone tumors First, the precautions before blood draw 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 physical examination, fasting should be done to avoid affecting the detection of indicators such as blood glucose in the second sky. 3, should relax when taking blood, to avoid the contraction of blood vessels caused by fear, increase the difficulty of blood collection. Second, should pay attention after blood draw 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. Third, the specimen avoids hemolysis, otherwise the measurement result can be increased. Fourth, the physiological phosphorus content can also be slightly changed: for example, due to the influence of ultraviolet light in summer, it can be slightly higher than that in winter; inorganic phosphorus can be increased after heavy physical labor; however, inorganic phosphorus can be reduced in normal pregnant women. Inspection process Take an appropriate amount of blood and immediately send it for inspection. Detection operation: Take 0.2 ml of serum, add 4.8 ml of trichloroacetic acid-ferrous sulfate solution, mix well, place for 10 min, and centrifuge to precipitate. The inorganic phosphorus standard is also treated in the same way. Mix, place for 15 min, use a wavelength of 640 nm or red filter, light path 1.0 cm colorimetric, correct the absorbance to 0 point with a blank tube, and read the absorbance of each tube. Not suitable for the crowd no. Adverse reactions and risks no.