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Lab Dept:
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Coagulation
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Test Name:
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HEPARIN COFACTOR II CHROMOGENIC
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General Information
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Lab Order Codes:
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HCOF
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Synonyms:
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Heparin Cofactor; Heparin Cofactor II, Blood
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CPT Codes:
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85130 - Chromogenic substrate assay
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Test Includes:
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Heparin cofactor activity reported as a %.
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Logistics
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Test Indications:
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Useful in the evaluation of familial thrombosis, deep vein thrombosis, myocardial infarction, and in risk of post-operative thrombosis.
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Lab Testing Sections:
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Coagulation - Sendouts
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Referred to:
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Fairview University Medical Center
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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2 - 7 days, test performed at reference lab once a week
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Special Instructions:
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Must arrive at reference lab with in 24 hours. Deliver immediately to the laboratory.
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Specimen
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Specimen Type:
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Whole Blood
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Container:
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Light Blue top (Buffered Na Citrate 3.2%) tube
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Draw Volume:
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4.5 mL blood in a 5 mL tube (Minimum: 2.7 mL in a 3 mL tube)
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Processed Volume:
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Specimen will be processed by reference lab facility.
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Collection:
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A clean venipuncture is essential.Do Not use the first 2 mL’s of blood collected.
Patient’s with hematocrit levels >55% must have a special tube made to adjust for the hematocrit; contact laboratory for special tube.
Mix thoroughly by gentle inversion.
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Special Processing:
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Lab Staff: Do Not centrifuge. Send in original Vacutainer® tube.
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Patient Preparation:
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None
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Sample Rejection:
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Improper tube, Clotted sample, Underfilled tubes, Overfilled tubes, Specimen over 24 hours old, Mislabeled or unlabeled specimens
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Interpretive
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Reference Range:
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≥1 year: 65 - 135%
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Critical Values:
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N/A
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Limitations:
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N/A
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Methodology:
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Chromogenic Activity Assay
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References:
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Fairview University Medical Center Laboratory Web Page http://labguide.fairview.org/diagnostic.asp
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Harmening DH (1997) Clinical Hematology and Fundamentals of Hemostasis
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Updates:
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5/25/2010: Tubing patient specimens is no longer prohibited.
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