Preferred Specimen(s) 3 ml whole blood collected lavender top EDTA tube
Instructions Do not refrigerate
Transport Container Sodium citrate (light blue-top) tube
Transport Temperature Room temperature, stable 48 hours
Reject Criteria
- Gross hemolysis
- Clotted
Methodology Cell counting and Microscopy
Clinical Significance Used to evaluate patient’s suspected of EDTA mediated platelet clumping. Platelets must be present in adequate numbers and have proper function to aid in hemostasis.