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Protein S Antigen, Plasma

Centralized Core Laboratory - Mayo Clinic Laboratories : Send Out

Test ID :
Test Workstation :
Specimen Type:
Tube Type:
Blue top (sodium citrate) tube
Collection Volume:
2.7 mL (minimum 1.8mL) - properly filled tube. Must use appropriate sodium citrate tube based on volume of blood drawn(1.8mL or 2.7mL)
Cause for Rejection:
Gross hemolysis, Gross lipemia, Grossly icteric
Sent to reference lab
Latex Immunoassay (LIA)
Special Instructions:
    Days Performed: Mon Fri
    Centrifuge, remove plasma, centrifuge plasma again Please send 1 mL frozen citrated plasma.
If collected at an offsite location, send by a STAT Courier to Hospital lab.
1-3 days
Additional Info:
Reference Range:
    Males: 80-160%
    <50 years: 70-160%
    > or =50 years: 80-160%
    Males: 65-160%
    <50 years: 50-160%,/ul>
      > or =50 years: 65-160%
    Normal, full-term newborn infants or healthy premature infants may have decreased levels of total protein S (15-50%); but because of low levels of C4b-binding protein, free protein S may be normal or near the normal adult level (> or =50%). Total protein S reaches adult levels by 90 to 180 days postnatal.
CPT Code:
85305, 85306
Panel Includes:
Total Protein S; Free Protein S
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