- Pre Study Visit: Blood test called lactate dehydrogenase (LDH) to check organ function. Prothrombin time (PT) and an a partial thromboplastin time (PTT) to see if the patient's blood clots normally. Electrocardiogram (EKG) (to measure the electrical function of patient's heart). Pregnancy Test (IF APPLICABLE a woman of child bearing age). Optional Tumor Biopsy (If indicated by patient's physician).