CREATE TABLE table_20592988_1 (platelet_count VARCHAR(255), bleeding_time VARCHAR(255), partial_thromboplastin_time VARCHAR(255))
What is the status of platelet counts for conditions where bleeding time is prolonged and partial thromboplastin time is unaffected? 
    
SQL: SELECT platelet_count FROM table_20592988_1 WHERE bleeding_time = "Prolonged" AND partial_thromboplastin_time = "Unaffected"