Laboratory Medicine
Test catalogue
Free Protein S Antigen (Free Protein S) | |
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Test NameFree Protein S Antigen (Free Protein S) |
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Specimen Type / RequirementsContainer Type = Blue Tube (Sodium Citrate) Minimum Testing Volume = Full draw 9:1 Ratio (9 parts blood to 1 part anticoagulant) |
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Specimen HandlingCollection Instructions: Must indicate anticoagulant status to avoid delay. Approval from the Medical Director is REQUIRED for inpatient samples. Referred-in patients can be tested without approval from the Medical Director. Outpatients can be tested from pre-approved clinics and ordering physicians. Write your initials, date and time of collection on the collection label. Transportation: In/Outpatients: Send whole citrated blood at room temperature as soon as possible. Referred-in: Send frozen citrated plasma on dry ice. All samples must be sent to the Core Laboratory. Stability: Specimens are stable for 4 hours post collection at room temperature. Specimens which are not tested within 4 hours can be double-spun to remove the citrated plasma. The citrated plasma is stable at -20°C for up to two weeks or -70°C for up to six months. Sample Rejection Criteria: Clotted sample, grossly hemolyzed samples, Unlabeled or samples with insufficient quantity will be rejected. |
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Required Documentation |
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Turnaround Time (TAT)7 days |
Test Utilization |
Reference ValueMale = 0.60 – 1.28 U/mL Female = 0.50 – 1.22 U/mL |
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Test CodePSAGF |
MethodologyLatex Immunoassay |
Testing LocationSMH-Special Coagulation |
Other InformationLast Updated: June 06, 2019
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