Antithrombin III Antigen

What it measures

• Antithrombin III AntigenLOINC 1868-9

Specimen

Specimen

1 mL frozen platelet-poor plasma collected in 3.2% sodium citrate (light blue-top) tube

Minimum volume

0.5 mL

Container

Transport tube

Temperature

Frozen

Please submit a separate, frozen vial for each special coagulation assay ordered. 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). Freeze immediately and transport on dry ice.

Turnaround

Set up: Tues-Sat (a.m.); Report available: 2 days

Billing

CPT 85301