Corrupted Bloods 2-point bonus Reads:
Your current health and your ward cannot exceed 50% of your maximum health. You always count as being at low life.
Health and Ward cannot exceed max Health percentage: 50%
However when looking in game ward is capped at slightly less than 50% of maximum health.
My current case:
Maximum health: 3739
Half, rounded down: 1869
Ward is capped at 1861
This has been tested by using a belt that converts all health from potions to ward and it still does not exceed the lower amount of health.