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Protein S Panel, Total and Free

Test Name:Protein S Panel, Total and Free
Epic Order Code:LAB760  
CPT Code:Total:85305 
 Free:85306 
Specimen(s) Type:Plasma; Full tube required.
Acceptable Container(s):Top is light blue.
Testing Schedule:Monday-Friday, 8 a.m.-3 p.m.
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 S is being collected, draw 5 mL into a red top tube, discard and then collect Protein S 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:Total: > 59.0%
 Free: > 55.0%
Additional Information:Patients on coumadin or who are vitamin K deficient may have decreased levels.