Table schema:
CREATE TABLE table_1557752_1 (prothrombin_time VARCHAR, partial_thromboplastin_time VARCHAR, bleeding_time VARCHAR)

Question: If the partial thromboplastin and bleeding time is prolonged, what is the prothrombin time?
SQL: SELECT prothrombin_time FROM table_1557752_1 WHERE partial_thromboplastin_time = "Prolonged" AND bleeding_time = "Prolonged"