Laboratory Medicine
Test catalogue
Platelet Aggregation | |
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Test NamePlatelet Aggregation |
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Specimen Type / RequirementsContainer Type = Blue Minimum Testing Volume = 9:1 Ratio – Full Draw |
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Specimen handlingCollection Instructions: Collect blood into blue top vacutainers which contain 3.2% buffered sodium citrate. NOTE: The ratio of blood to anticoagulant is 9 parts blood to 1 part anticoagulant, therefore the blue top vacutainer (citrate) must be filled AT LEAST ¾ in total volume. Cut-off time for testing is 3:00 p.m. Specimens must be maintained at room temperature and transported immediately to the Special Coagulation lab, following phlebotomy. Haematology consult is required. Please call Special Coagulation at ext 5123 or the Haematologist on call. Write your initials, date and time of collection on the collection label. Stability: Stable frozen at -20C for up to two weeks or -70C for up to six months Transportation: Send sample to core lab as soon as posible.DO NOT SEND specimens via the pneumatic tube system. Specimens should be transported by porter and maintained at room temperature with minimal agitation . Specimens that cannot be tested within the suitable timeframe (within 2hrs of Collection) are to be double-spun and send frozen. Laboratory Staff Instructions: Testing is to occur within 3 hours from the time of blood collection due to the lifespan of platelets Special care must be taken to ensure that specimens are not agitated. Specimens must remain in the upright position until time of testing. Sample Rejection Criteria: Clotted sample, Grossly hemolyzed samples, Unlabeled or Not Sufficient Quantity Samples will be rejected. Transportation: via the pneumatic tube system is UNACCEPTABLE. |
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Required DocumentationRegular HIS order or Haematology requisition required. |
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Turnaround Time (TAT)1 Day |
Test Utilization> 24Hrs |
Reference ValueNormalized Ratio See Interpretive report |
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Test CodeWBPA |
MethodologyPlatelet Function |
Testing LocationSMH-Special Coagulation |
Other information
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