Fig. 1. Pseudo gray platelets. (A) Blood collected in EDTA 4 hours prior showing aggregated agranular gray platelets (arrow). (B) Blood collected into EDTA showing large and pale agranular platelets. (C) Blood collected into sodium citrate showing normally stained platelets with tiny purple granules. Blood films were prepared immediately after venipuncture (×1,000, Wright-Giemsa stain).