Viper venom recalcification time

In the RVVRT test, a medium amount of cerebral phospholipid suspension was used to observe the time required for blood coagulation to know whether the patient's blood coagulation factor was defective. 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, avoid heavy drinking. Normal value 19.2 ± 2.8 s. Clinical significance Abnormal result (1) Both RVVCT and RVVRT are prolonged, indicating a lack of factor X. (2) RVVCT is normal and RVVRT is prolonged, indicating lack of PF3. (3) Both RVVCT and RVVRT were normal, while PT was prolonged, indicating a lack of factor VII. (4) RVVCT prolongation, found in congenital or acquired fibrinogen, prothrombin, factor V, X deficiency. Need to check the population has a wound bleeding and other symptoms of coagulation disorders. High results may be diseases: hereditary prothrombin deficiency precautions Taboo when checking: Do not eat too greasy, high-protein foods, avoid heavy drinking. The alcohol content in the blood directly affects the test results. Requirements for inspection: (1) The venom dilution is unstable. If carbonic acid is added, it can be stored at 4 °C. If it is not added, it should be stored at -20 °C for about 20 days. (2) This test is used to identify factors VII and X. In the absence of Factor VII, the test was normal and plasma prothrombin time was prolonged; in the absence of Factor X, both the test and plasma prothrombin time were prolonged. This point has great practical significance. Inspection process The frog venom phospholipid time and the frog venom recalcification time were determined by the Chinese frog snake venom reagent. The difference between the two frog venom time measurements was that the former phospholipid source was exogenously provided, while the latter was derived from plasma platelet phospholipids. Not suitable for the crowd Generally no taboos. Adverse reactions and risks Generally not.