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Lab Test Dictionary

Protein S Activity (1779)

Methodology

Clot Detection


Synonyms

Protein S, Functional

Specimen Type

Plasma

Performing Lab

Quest Diagnostics San Juan Capistrano


Epic ID

LAB01041

Lab Test Days

Tuesday-Saturday; P.M.

Standard TAT

1 Day


Collection Information

Specimen Required

1.8-2.7 mL Blood

Container Type

Light Blue (Sodium Citrate)


Processing Information - Lab Use Only

Transport Temperature

Frozen-Only

Specimen Stability

Room Temp: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 Year

Rejection Criteria

Hemolysis; Recieved thawed; Received room temp; Received refrigerated

Test Volume Required

1 mL Platelet-Poor Plasma

Minimum Test Volume

0.5 mL Platelet-Poor Plasma

Processing Instructions

Centrifuge light blue-top tube for 15 minutes at approximately 1500 g within 60 minutes 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. Plasma must be free of platelets (<10,000/mcl). Freeze immediately and send frozen.


CPT Codes

85306


Revised

02-20-17

Initials

SL