Whole blood.
+Platelets.
+Packed red blood cells (PRBCs).
+Fresh frozen plasma.
+Leukocyte-poor red blood cells.
Spontaneous bleeding is unusual when platelet counts are more than 20,000/mm3. Platelet counts less than 10,000/mm3 may cause spontaneous bleeding. HLA matching may be performed for platelets in special circumstances. ABO matching is unnecessary.