My husband had a vasectomy back at the end of January. He already sent a sample back at the end of April and they said he had a few dead sperm and that he needed to do a repeat sample. He been trying to get another sample for a couple weeks. The nurse at the office said to fill the little tube up to half. Everytime he does his business in a cup it's never enough to fill that little tube half way. It's so frustrating. I'm so ready to ditch the condoms and finally be able to go bare. Were not really sure what to do since it's never enough for a half of tube.