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Fibrinogen Degradation Products (FDP), Plasma
- FDP, Plasma
Under normal conditions, the fibrinolytic process is localized on the fibrin clots because alpha2-antiplasmin and the plasminogen activator inhibitors prevent fibrinolysis from spreading. During disseminated intravascular coagulation (DIC), fibrinolysis spreads and becomes systemic, in which case the degradation of circulating fibrinogen will occur. Fragments that occur are very heterogeneous: products derived from fibrin, soluble completes, degradation products from fibrinogen, and from nonstabilized fibrin. An abnormal fibrinolytic and/or fibrinogenolytic activity shown by high levels of FDP in plasma can also be found in clinical states, such as eclampsia, carcinoma (promyelocytic leukemia), postoperative complications, cardiac and renal disorders, hepatic disorders, fibrinolysis, pulmonary embolism, and deep vein thrombosis (DVT). Positive result indicates the presence of FDP at a concentration ≥2.5 mg/mL. This test should not be used to rule out venous thromboembolism.
Latex agglutination (LA)
Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate.1 Evacuated collection tubes must be filled to completion to ensure a proper blood-to-anticoagulant ratio.2,3 The sample should be mixed immediately by gentle inversion at least six times to ensure adequate mixing of the anticoagulant with the blood. A discard tube is not required prior to collection of coagulation samples unless the sample is collected using a winged (butterfly) collection system. With a winged blood collection set a discard tube should be drawn first to account for the dead space of the tubing and prevent under-filling of the evacuated tube.4,5 When noncitrate tubes are collected for other tests, collect sterile and nonadditive (red-top) tubes prior to citrate (blue-top) tubes. Any tube containing an alternative anticoagulant should be collected after the blue-top tube. Gel-barrier tubes and serum tubes with clot initiators should also be collected after the citrate tubes. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Please print and use the Volume Guide for Coagulation Testing to ensure proper draw volume.
If the patient's hematocrit exceeds 55%, the volume of citrate in the collection tube must be adjusted. Refer to Coagulation Collection Procedures for directions.
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|115402||FDP, Plasma||30226-5||115402||FDP, Plasma||ug/mL||30226-5|