Photo-optical clot determination with Factor II deficient substrate.
Detection of specific coagulation factor II deficiency
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Increased in patients taking oral contraceptives. Interpretation of results may be limited if patient is receiving anticoagulant therapy.
Days Test Performed
Monday - Friday, one run per day
Soft Order Code
Factor 2 Assay
Factor II Assay
Factor II:C Assay
Factor 2 Assay
Factor 2 Activity
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Offsite Collection Instructions
Collect specimen in a blue top (citrate 3.2%) tube. Mix by inversion. Specimen should arrive at lab within 3 hours of collection; transport at room temperature. Alternatively, centrifuge, aliquot plasma into a plastic vial, and freeze the specimen within 4 hours of collection. Transport frozen specimen on dry ice. Collection of the blood through lines that have been previously flushed with heparin should be avoided. If the blood must be drawn through a VAD (vascular access device), the line should be flushed with 5 mL of saline and the first 5 mL of blood or six dead space volumes of the VAD discarded.
Specimens will be rejected if not properly filled, clotted, grossly hemolyzed, or contaminated with heparin.
Full 2.7mL tube or 1mL plasma aliquot
Full 1.8mL tube or 1mL plasma aliquot
Factor II is decreased with vitamin K deficiency, liver disease, during warfarin therapy, and in association with lupus anticoagulant.