Re: Whole blood and plasma meter readings Home › Forums › Living with type one › Whole blood and plasma meter readings › Re: Whole blood and plasma meter readings 7 February, 2011 at 7:47 pm #12168 lizzParticipant Accu-Chek Aviva. Look at the boxes of blood test strips and see if it has a yellow square or a green square with diagonal black lines on it. If so, your meter is giving you plasma readings, not whole blood.