pure blood (which coven)

hi there
i got the four phials with pure blood,cat dog frog and squirell,brought them back but quest doesn´t show completed.is this ok or must i do something to complete this.
thanks
i got the four phials with pure blood,cat dog frog and squirell,brought them back but quest doesn´t show completed.is this ok or must i do something to complete this.
