Minimum Volume. 0.5 mL. Collection Instructions. Platelet-poor plasma: Centrifuge light blue-top tube for 15 minutes at approximately 1500 g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial.
Factor V Activity and Human Inhibitor Not offered in Quest Infectious Disease Inc. – San Juan Capistrano, CA | Quest Nichols Institute – Valencia, CA. Please provide SERVICE AREA INFORMATION to confirm Test Code for the lab that services your account or to find available tests you can order.
Clinical Significance Factor V (Leiden) Mutation Analysis – Factor V (Leiden) Mutation is a point mutation that causes resistance of Factor V protein degradation by activated protein C (APC). This mutation is associated with increased risk of venous thrombosis.
This mutation is known as factor V Leiden, R506Q, or G1691A. An individual who is heterozygous has one copy of the factor V gene that carries the Leiden mutation and one copy that does not carry the mutation. Individuals who are heterozygous carriers of the mutation have an increased risk for thromboembolism. This increased risk is not as high as that conferred by 2 copies (homozygous) of the factor V .
Factor V (Leiden) Mutation Analysis – Factor V (Leiden) Mutation is a point mutation that causes resistance of Factor V protein degradation by activated protein C (APC). This mutation is associated with increased risk … More. Activated Protein C Resistance with Reflex to Factor V (Leiden) Mutation | Test Detail | … Activated Protein C Resistance with Reflex to Factor V (Leiden) Mutation – Activated.
086249: Factor V Activity | Labcorp, Factor V (Leiden) Mutation Analysis | Test Detail | Quest …
Factor V (Leiden) Mutation Analysis | Test Detail | Quest …
Factor VIII Activity, Clotting | Test Detail | Quest …
Factor V is a large (330 kilodalton) single-chain nonenzymatic cofactor that is synthesized in hepatocytes, megakaryocytes, and endothelial cells. 6,7,9 Approximately 20% of the total factor V is carried in the ? granules of platelets and is released when platelets are activated. 6 The structure of factor V is similar to that of factor VIII. 9 Factor V’s plasma concentration is 7 mg/mL and half-life is about 15.
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Factor V (labile factor) is highly susceptible to proteolytic inactivation, with the potential for spuriously decreased assay results. In normal individuals, after freeze-thaw of citrate plasma, factor V activity typically may be 10% to 20% less than observed in a fresh plasma specimen, and in occasional individuals, a more marked decrease of factor V activity occurs.
Factor VIII Activity , Clotting – The most common form of hemophilia, Hemophilia A, is caused by a deficiency of Factor VIII. Hemophilia A is an X-linked disorder affecting between 1 in 5000 to 10000 males. Measurement of Factor VIII activity levels is used to classify Hemophilia A (mild, moderate or severe) and to assess response to treatment.
Minimum Volume. 0.5 mL. Collection Instructions. Platelet-poor plasma: Centrifuge light blue-top tube for 15 minutes at approximately 1500 g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial.
