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Lab Test Dictionary

Antithrombin III Antigen (5158X)

Methodology

Fixed Rate Time Nephelometry

Synonyms

AT3

Specimen Type

Plasma

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID

LAB00919

Lab Test Days

Tuesday, Thursday and Saturday

Standard TAT

2-4 Days

Collection Information

Specimen Required

1.8-2.7 mL Blood

Container Type

Light Blue (Sodium Citrate)

Collection Instructions

Patient should abstain from anabolic steroids, Gemfibrozil, Warfarin (Coumadin), heparin therapy, asparaginase, estrogens, gestodene and oral contraceptives optimally for 3 days prior to specimen collection. Overnight fasting is preferred.

Processing Information - Lab Use Only

Transport Temperature

Frozen-Only

Specimen Stability

Room Temp: Unacceptable; Refrigerated: Unacceptable; Frozen: 21 Days

Rejection Criteria

Received 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 1500g 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/?L). Freeze immediately and send frozen.