Plasma coagulation factor V activity assay

The determination of plasma coagulation factor V activity is a measure of the activity of plasma coagulation factor V, a procoagulogenin, in humans, and is a good indicator for judging the prognosis of patients with liver diseases. Coagulation factor V activity is the best predictor of prognosis in patients with fulminant hepatic failure induced by non-acetaminophen. Studies suggest that factor V levels are more specific than PTA to reflect the prognosis of patients with severe hepatitis, and the combination may help to diagnose severe hepatitis earlier and more accurately, while strengthening the detection of severe hepatitis factor V and focusing on factor V in patients with liver failure. Study of the main screening indicators during liver transplantation. In addition to its prognosis, clotting factor V activity is closely related to the formation of thrombus and can be used as a predictor of portal vein thrombosis. Basic Information Specialist classification: growth and development examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Tips: Do not eat too greasy, high-protein foods the day before, and avoid heavy drinking. Normal value The normal value is 2 to 4 mg/mL. Clinical significance Abnormal result Coagulation factor V activity is the best predictor of prognosis in patients with fulminant hepatic failure induced by non-acetaminophen. Studies suggest that factor V levels are more specific than PTA to reflect the prognosis of patients with severe hepatitis, and the combination may help to diagnose severe hepatitis earlier and more accurately, while strengthening the detection of severe hepatitis factor V and focusing on factor V in patients with liver failure. Study of the main screening indicators during liver transplantation. In addition to its prognosis, clotting factor V activity is closely related to the formation of thrombus and can be used as a predictor of portal vein thrombosis. People who need to be examined have people with symptoms of liver failure. Low results may be diseases: chronic hepatitis precautions Taboo before the test: Do not eat too greasy, high-protein foods the day before the test, to avoid heavy drinking. The alcohol content in the blood directly affects the test results. After 8 pm on the day before the medical examination, you should fast. Requirements for examination: When taking blood, you should relax your mind to avoid the contraction of blood vessels caused by fear and increase the difficulty of blood collection. Inspection process Vascular blood collection was used for testing. Before venous blood collection, carefully check that the needle is securely installed and that there is air and moisture in the syringe. The needle used should be sharp, smooth, ventilated, and the syringe should not leak. Firstly, the skin was disinfected from the inside to the outside and clockwise from the selected venipuncture with a 30g/L iodine swab. After the iodine was volatilized, the iodized trace was wiped out in the same way with a 75% ethanol swab. Fix the lower end of the venipuncture site with the thumb of the left hand, hold the syringe syringe with the thumb and middle finger of the right hand, and fix the needle lower seat with the index finger, so that the bevel of the needle and the scale of the syringe are upward, and the needle is inclined along the vein to make the needle and the skin obliquely penetrate the skin at an angle of 30°. Then, through the vein wall, enter the venous cavity forward at an angle of 5°. After seeing the blood return, the needle will be probed into the spot to avoid the needle slipping out when the blood is collected; but it is not possible to use a deep puncture to avoid hematoma, and immediately remove the cuff. Needle plug can only be pumped out, can not be pushed in, so as to avoid injecting air into the vein to form a gas plug, causing serious consequences. Remove the syringe needle and slowly inject the blood into the anticoagulation tube along the tube wall to prevent hemolysis and foam. Not suitable for the crowd A patient with hemophilia and severe clotting factor deficiency. Adverse reactions and risks Risk of infection: If you use an unclean needle, you may be at risk of infection.