Platelet Immunology Laboratory
Sample Requirements
| Tests | Recommended Sample Age | Minimum Sample Volume | Comments | |||||||||||
| Platelet Alloantibody Workup (Basic or Advanced) | 48 hours | 10cc ACD (light yellow top)
10cc Clot (red top) |
For Patients Receiving HLA-Matched Platelet Support. Always send whole blood, room temperature | |||||||||||
| Platelet Autoantibody Test (Direct and Indirect) | 24 hours | 5cc Citrate (blue top)
EDTA (lavender top) See below for amount:
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*If the platelet count is less than 10,000 we cannot recover sufficient platelets to perform the autoantibody test (Direct). Please contact the Lab Supervisor for your testing options.
Always send whole blood, room temperature.
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| Platelet Drug Antibody Test (Drug-related ITP) | 24 hours | See comments | Please contact the Lab Supervisor for the testing requirements.
Always send whole blood, room temperature. |
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| Neonatal Alloimmune Throm- bocytopenia Evaluation (NATP)* |
24 hours | Mother: 20cc EDTA (Lavender top); 10cc Citrate (blue top); 10cc Clot (Red top).
Father: 20cc EDTA (Lavender top) |
Please contact the Lab Supervisor for consultation and/or provide clinical history. Always send whole blood, room temperature. |
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| Post Transfusion Purpura Workup (PTP) | 24 hours | 10cc EDTA (Lavender top); 10cc Citrate (blue top); 10cc Clot (red top). | Please contact the Lab Supervisor for the testing requirements.
Always send whole blood, room temperature. |
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| Heparin Antibody Test (HIT) | 24 hours | 5cc Citrate (blue top)** |
**If sending over the weekend, spin and freeze plasma at -20°C then send frozen on dry ice. | |||||||||||
| Platelet Typing for Single Platelet Antigen | 48 hours | 10cc EDTA (lavender top) or 10cc ACD (light yellow top) | Always send whole blood, room temperature. | |||||||||||
| ADAMTS-13 Protease Activity / Inhibitor |
Spin within 4 hours | 5cc Citrate (blue top)* |
Spin and freeze plasma at -20oC then send frozen on dry ice. |
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Contact us: 206-689-6543
