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Laboratory Test Directory

Platelet Antibodies, Indirect


Name Method Department Units
Platelet Antibody Screen Semi-Quantitative Enzyme-Linked Immunosorbent Assay
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Specimen Requirements

Serum Spun

Container Type Container Size Specimen Volume

Red tube, (no anticoagulant), No Gel

3 mL 1 mL

Gold tube, (SST) with Gel

3.5 mL 1 mL

Red Tube (no anticoagulant) with Gel

3 mL 1 mL

Refrigerated - 2 day(s)
Frozen - 1 month(s)

Specimen Preparation

  • Centrifuge within 2 hours, separate supernatant and freeze
  • Transport to laboratory as soon as possible

Reasons for Rejection

  • Contamination
  • Heat treated specimen
  • Hemolyzed specimen
  • Lipemic specimen
  • Room temperature receipt
  • Wrong collection tube


For newborns less than 30 days old, collect specimen from the mother.

Not recommended for the diagnosis of immune thrombocytopenic purpura (ITP). Use to detect platelet-specific antibodies in suspected fetal or neonatal alloimmune thrombocytopenia, post-transfusion purpura, or multiplatelet transfusion refractoriness.

CPT Code

  • 86022