Ordering Guidance

For testing neonates, send a maternal specimen, as unbound platelet antibodies may not be detected in the neonate's serum.

This test is not recommended for the diagnosis of immune thrombocytopenia or autoimmune thrombocytopenia. Tests that are optimized to detect antibodies bound to the platelets will be useful in these situations; cell-bound platelet antibody (direct) test is strongly recommended.

Necessary Information

Specimen Required

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1.5 mL Serum

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.

Additional Information: For testing neonates, draw blood from the mother of the neonate. Then follow the Collection Instructions prior to sending.