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  • Homocysteine

    Test Name:Homocysteine
    Epic Order Code:LAB93
    CPT Code:83090  
    Specimen(s) Type:Serum; 1.0 mL
    Acceptable Container(s):
    Testing Schedule:Monday - Friday
    Turn Around Time:STAT: NA
     Routine: 1 - 3 days
    Collection Information:No special patient preparation is required. Obtain specimen by standard collection procedures.
    Transport Information:Deliver to lab immediately on ice. All specimens must be signed into the laboratory.
    Reference Clients:If unable to deliver to the lab immediately on ice, centrifuge the specimen and remove serum from the red cells. Store and transport at 2 - 8° C. Specimen must be received in the lab within 14 days. If longer storage is required, store and transport the sample at -20° C for up to 1 year.
    Causes for Rejection:Improperly labeled, incorrect container, contaminated, insufficent quantity, incorrect/delay in transport, gross hemolysis.
    Reference Range:Male: 5.46 - 16.20 μmol/L
     Female: 4.44 - 13.56 μmol/L
    Additional Information:The following drugs may elevate levels of homocysteine: methotrexate, carbamazepine, phenytoin, nitrous oxide, anticonvulsants and 6-azauridine triacetate. The mechanism of action of these drugs affects different parts of the metabolic pathway of homocysteine.