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  • Protein C Antigen

    Test Name:Protein C Antigen
    Epic Order Code:LAB489
    CPT Code:85302  
    Specimen(s) Type:Plasma; Full tube required
    Acceptable Container(s):
    Testing Schedule:Monday - Friday, 8 am - 3 pm
    Turn Around Time:STAT: NA
     Routine: 2 - 7 days
    Collection Information:No special patient preparation is required. Obtain specimen by standard collection procedures. If only Protein C Ag is being collected, draw 5 mL into a red top tube, discard and then collect Protein C Ag tube. A full tube is required.
    Transport Information:Deliver to lab immediately. All specimens must be signed into the laboratory.
    Reference Clients:If unable to deliver to the lab within 1 hour, centrifuge the specimen for 10 minutes at 3500 RPM to ensure platelet poor plasma. Remove plasma from cells, taking care to avoid the WBC/platelet buffy layer and place into a transport tube. Store and transport at 2-8° C for up to 3 hours. If testing is delayed beyond this, the sample must be stored and transported frozen at -20° C and delivered to lab within 2 weeks.
    Causes for Rejection:Improperly labeled, incorrect container, contaminated, insufficient quantity, incorrect/delay in transport, grossly hemolyzed, clotted, under or over-filled tube, interference by heparin or Factor VIII.
    Reference Range:> 55%
    Additional Information:Patients on coumadin or who are vitamin K deficient may have decreased levels.