ALB and neoplasm: The tumor uptake and clearance of 177Lu-L1 were in the same range as 177Lu-Alb-L6 (30.81 ± 2.86%ID/g, 15.67 ± 6.25%ID/g, 11.94 ± 3.83%ID/g, 9.33 ± 3.18%ID/g, and 4.21 ± 1.45%ID/g at 192 h).