Protein S, Total Antigen

Specimen:

Test Code

YSAGR

Specimen Name

Protein S, Total Antigen

Collect

2-Blue Top (Na Citrate)

Submit

1.5 mLs (Min: 1 mL) Plasma Frozen

Special Handling

Transfer 1.5 mL platelet-poor plasma to a standard transport tube.

Rejection Criteria

Serum. EDTA plasma, clotted or hemolyzed specimens.

Stability

Ambient: 4 hours; Refrigerated: Unacceptable; Frozen: 3 months

Methodology

Microlatex Particle-Mediated Immunoassay

Performed

Sunday - Saturday

Reported

3-5 days

CPT Codes

  • 85305

Components

Additional Information

Not recommended for detecting protein S deficiency; preferred test is Protein S Free, Antigen. Use to subtype deficiency in known protein S-deficient individuals in combination with Protein S Free, Antigen, or Protein S, Functional. Do not order if individual has been on warfarin therapy in the previous 2-4 weeks.

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Test Information

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Common Lab Definitions

  • Serum 
  • Plasma 
  • STT