Factor Inhibitor Assay (Blood)

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Testing Laboratory

Auckland Te Toka Tumai | Auckland Hospital

Department

Haematology

Delphic Registration Code (Alpha Code)

CMSC

Test Code (Numeric Code)

1850

Laboratory Handling

Phlebotomy

Collect 1 x 2.7ml Citrate (Blue Cap) or 1 x 1.8ml Citrate (Light Blue Cap).

Transport

  • Do not place on 8100.
  • Frozen samples are stored in the Specimen Services Freezer (No 35) in the Coagulation rack.
  • Partially thawed samples should be given directly to the Coagulation staff.

    Registration

    Please register test code CMSC.

    Sample Stability

    NA

    • Synonyms

    Factor IX Inhibitor Assay
    Factor VIII Inhibitor Assay
    Factor 9 Inhibitor Assay
    Factor 8 Inhibitor Assay

    Turnaround Time

    2 weeks

    The Factor Inhibitor Assay is done fortnightly. For Urgent requests, please contact the Technical Specialist in the Coagulation Laboratory (Ext 22069).

    Specimen Type

    • Whole Blood

    Specimen Requirements

    Tube/Container Type:

    Preferred
    • Citrate (Blue Cap)
    Acceptable
    • Please refer to Additional Information below
    • Citrate (Light Blue Cap)
    Preferred Sample Volume (ml)

    2.7

    Minimum Sample Volume (ml)

    2.7

    No of Samples Required

    1

    Paediatric Specimen Requirements

    Tube/Container Type:

    Preferred
    • Please refer to Additional Information below
    • Citrate (Blue Cap)

    Pre-testing Requirements

    Test request must be referred via a Haematologist or the Haemophilia Centre.

    Additional Specimen Information

    Collect 1 x 2.7ml Citrate (Blue Cap) or 1 x 1.8ml Citrate (Light Blue Cap).

    Last updated: 26/08/2026