Not necessarily. Some pubmed reports suggests that grape may help significantly if hct is way out of order. Some of them went from 54 to 49.
Hct displays how many % the red blood cells tax your entire blood.
Didnt understand if it erased some of the rbc(not likely)or put more liquid to the blood maken it thinner.
So i guess it would do nothing for rbc but it migth lower hct, which is more important.
But i wouldnt count on grape. If hct is 54+ its time to bleed.