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Test Code HIT Anti-Platelet Factor 4 Antibody / Heparin Induced Thrombocytopenia

Important Note

Please consult Haematologist before ordering this test.

Please indicate 4Ts score.

For urgent test request, contact Haematology at 67725320.

Laboratory Code

LAB3040584

Specimen Requirements

Specimen Type: Serum
Container/Tube: Gold Top (SSTII) / Red Top
Volume: 5.0 mL
Minimum Volume: 1.0 mL serum

Collection Instructions:

1. Allow specimen to clot for 30 mins and centrifuge within 2 hrs.

2. Serum should be separated into 2 aliquots with minimum volume of 1.0 mL each.

3. Freeze the serum in well-closed plastic tube immediately.

Specimen Stability

Specimen Type Serum
Ambient Reject
Refrigerate 2 days
Frozen 14 days (preferred)

Methodology

Enzyme-Linked Immunosorbent Assay (ELISA)

Days and Times Performed

Tuesday through Friday, TAT 14 working days

Specimen Condition

Gross Haemolysis Reject
Gross Icterus Reject
Gross Lipaemia Reject
Others Not applicable

Reference Interval

Absent

Testing Laboratory

National University Hospital

Haematology, 67725320

Useful For

Useful in evaluation of possible immune-mediated type II Heparin-Induced Thrombocytopenia (HIT-II).

Service Code

12436

LOINC Code Information

57761-9

Alias

APF4
Heparin induced antibody

Update

Last updated 20/03/2025