| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:32.86 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 100m Backstroke | 1:22.75 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Breaststroke | 1:27.08 | 2026 Ontario Age Groups - MPAC | 2026-03-05 |
| 100m Breaststroke | 1:24.29 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 100m Freestyle | 1:19.58 | BAD Outdoor LC Invitational | 2025-06-20 |
| 100m Freestyle | 1:11.43 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m Backstroke | 3:05.97 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 200m Backstroke | 2:51.54 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 200m Breaststroke | 3:08.79 | 2026 Ontario Age Groups - MPAC | 2026-03-05 |
| 200m Breaststroke | 3:02.33 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m Freestyle | 2:54.20 | BAD Outdoor LC Invitational | 2025-06-20 |
| 200m Freestyle | 2:34.71 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m IM | 3:19.02 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 200m IM | 2:50.29 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 400m Freestyle | 5:45.40 | Border City Invitational 2025 | 2025-12-05 |
| 50m Backstroke | 39.86 | Border City Invitational 2025 | 2025-12-05 |
| 50m Breaststroke | 39.10 | 2026 Ontario Age Groups - MPAC | 2026-03-05 |
| 50m Breaststroke | 38.58 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 50m Butterfly | 47.99 | BAD Outdoor LC Invitational | 2025-06-20 |
| 50m Butterfly | 39.66 | Border City Invitational 2025 | 2025-12-05 |
| 50m Freestyle | 35.93 | BAD Outdoor LC Invitational | 2025-06-20 |
| 50m Freestyle | 31.21 | 2026 Joanne Malar Invitational | 2026-01-16 |
Lu, Isaac's top personal bests include 100m Backstroke (1:32.86), 100m Backstroke (1:22.75), 100m Breaststroke (1:27.08), 100m Breaststroke (1:24.29), 100m Freestyle (1:19.58).
Lu, Isaac swims for Toronto Olympian Swim Team.
Lu, Isaac has competed in 10 meets.