The tumor uptake of 177Lu-Alb-L4 was 40.89 ± 4.73%ID/g at 2 h, 88.04 ± 16.51%ID/g at 24 h, 87.74 ± 14.09%ID/g at 48 h, and 42.22 ± 14.05%ID/g at 192 h, respectively. This evidence concerns the gene ALB and neoplasm.