Blood on player

[Refk]

Officiated with friend this weekend at JV tournament and he said that a situation occurred in a game earlier in the week and wasn't sure if he handled it correctly.

Team A secures rebound, quick outlet and heading other way -- 2 on 1 fast break when he notices Player B ( still in backcourt) has blood running down his shin. He blows the whistle to stop play to take care of the blood , ending the fastbreak. He said that the player bleeding was in " the mix " of other players.

Question he had was : Should he have waited to blow whistle until play (fast break) ended or did he handle it correctly. Coach A wasn't happy at first but when he explained the situation then coach was ok.

I told him I would come here to get the answer

Thanks