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HelpTest Code LAB311 Antithrombin III Activity Assay (ATIII)
Department
HEMATOLOGY
Collection Requirements
Must be a full draw.
Mix thoroughly immediately after collection.
Primary Collection Container
Blue 2.7 mL (Citrate)
Transport
Plasma frozen
Preferred Transport Temperature
Frozen
Processing
Mix thoroughly before centrifugation.
Centrifuge within 30 minutes of collection, 20 min at 3300rpm.
Separate plasma and fast freeze.
Stability
Ambient: Unacceptable
Refrigerated: 4 hours
Frozen:1 week
Minimum Testing Volume
2.7 mL
Reference Range
80-120%
Methodology
Chromogenic ACL Top
Performed
Sunday – Saturday
7:00 am – 2:30 pm
Reported
Varies
CPT Codes
85300
Unacceptable Conditions
Hemolyzed, clotted, short drawn, non-frozen and serum specimens.