Protein S Antigen, Total QPRSAG

Method(s) Immunoturbidimetric
Specimen Required
Collect

One 3 mL light blue (sodium citrate) top tube.

Transport

1 mL frozen plasma (Min: 0.5 mL).

CRITICAL FROZEN

* Collection Instructions *

  • Draw blood in a light blue-top tube containing 3.2% sodium citrate.
  • Mix gently by inverting 3-4 times.
  • Centrifuge 15 minutes at 1500 g within one hour of collection.
  • Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial.
  • Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial(s).
  • Plasma must be free of platelets (<10,000/uL).
  • Freeze immediately and transport on dry ice.
Stability

Ambient: Unacceptable

Refrigerated: Unacceptable

Frozen: 30 days

Unacceptable Conditions
  • Hemolysis
  • Received thawed
Schedule Mon-Fri
CPTCode 85305
Notes Performing Laboratory-Quest Diagnostics-Chantilly VA
Preferred Specimen Collection Device(s)
Reference Interval

70-140% normal

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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