Antithrombin Assay (Blood)

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Testing Laboratory

Counties Manukau | Middlemore Hospital

Department

Haematology

Delphic Registration Code (Alpha Code)

AT

Test Code (Numeric Code)

1629

Laboratory Handling

Sample Stability

4 hours at room temperature or may be frozen if testing is to be delayed

Synonyms

AT III, Antithrombin III, AT3, AT

Turnaround Time

2 hours

Assay performed every 2 weeks

Specimen Type

  • Plasma

Specimen Requirements

Tube/Container Type:

Preferred
  • Citrate (Light Blue Cap)
Preferred Sample Volume (ml)

2.7

Paediatric Specimen Requirements

Tube/Container Type:

Preferred
  • Citrate (Light Blue Cap)
Acceptable
  • Citrate (Microtainer)

Additional Specimen Information

3x 2.7 ml Citrate tubes (Light blue top) filled up to the "Fill Line" if part of a Thrombophilia Screen

Last updated: 09/04/2026