Thrombelastograms before and after homotransplantation of kidney (chronic glomerulonephritis. (Patient 20: thrombelastogram on Oct 14, four days before transplantation, platelets 62,000, BUN 148 mg/100 cc. Thrombelastogram on Oct 21, three days after transplantation, platelets 95,000, BUN 20 mg/100 cc. This thrombelastogram is normal. Center strip of the presurgical thrombelastogram indicating severe platelet insufficiency has disappeared and fibrin formation starts at normal time.