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Lab Dept:
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Chemistry
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Test Name:
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LIPOPROTEIN a
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General Information
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Lab Order Codes:
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LIPOA
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Synonyms:
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Lp(a) apoprotein
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CPT Codes:
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83695 – Lipoprotein (a)
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Test Includes:
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Lipoprotein a level reported in mg/dL.
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Logistics
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Test Indications:
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Providing additional information on coronary heart disease risk in patients known or suspected to be at increased risk based on other factors, including family history of premature coronary heart disease or stroke, hypertension, cigarette smoking, obesity, diabetes mellitus, increased concentration of LDL cholesterol, and depressed concentration of high density lipoprotein (HDL) cholesterol.
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Lab Testing Sections:
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Chemistry – Sendouts
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Referred to:
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Mayo Medical Laboratories (MML Test#: LIPA/81558)
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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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1 – 3 days
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Special Instructions:
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Because Lipoprotein a acts like an acute-phase protein, it should not be measured during periods of active inflammation. Lipoprotein a levels should not be measured for at least 1 month following myocardial infarction or stroke.
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Specimen
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Specimen Type:
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Blood
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Container:
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Red top tube
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Draw Volume:
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3 mL (Minimum: 1.5 mL) blood
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Processed Volume:
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1 mL (Minimum: 0.5 mL) serum
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Collection:
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Routine venipuncture
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Special Processing:
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Lab staff: Centrifuge specimen, remove serum aliquot into a screw-top plastic vial. Store and ship at refrigerated temperatures. Forward promptly.
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Patient Preparation:
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None
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Sample Rejection:
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Mislabeled or unlabeled specimens; gross hemolysis; gross lipemia; grossly icteric
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Interpretive
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Reference Range:
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≤30 mg/dL
Values >30 mg/dL may suggest risk of coronary heart disease.
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Critical Values:
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N/A
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Limitations:
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Because Lipoprotein a behaves like an acute-phase protein, it should not be measured during periods of active inflammation. Serum Lipoprotein a levels should not be measured for at least 1 month after a myocardial infarction or stroke.
This is not recommended as a screening test in the healthy population.
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Methodology:
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Automated Turbinometric Immunoassay
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References:
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Mayo Medical Laboratories Web Page September 2012
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Updates:
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1/23/2006: CPT 2006 updates
4/19/12: Changed from frozen to refrigerated
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