| Ordering Recommendation: |
Not recommended for detecting protein S deficiency; preferred test is Protein S Free, Antigen (0098894). Use to subtype deficiency in known protein S-deficient individuals in combination with Protein S Free, Antigen (0098894), or Protein S, Functional (0030114). Do not order if individual has been on warfarin therapy in the previous 2-4 weeks.
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| Methodology: |
Microlatex Particle-Mediated Immunoassay
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| Performed: |
Sun-Sat
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| Reported: |
1-2 days
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| Specimen Required: |
Collect: Lt. blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.
Specimen Preparation: Transfer 1.5 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 1 mL)
Storage/Transport Temperature: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Unacceptable Conditions: Serum. Non-frozen or hemolyzed specimens.
Stability (collection to initiation of testing): Ambient: 4 hours; Refrigerated: Unacceptable; Frozen at -20°C: 3 months, at -70°C: 6 months
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