Whereas the terms IUI and ICI denote whether the sperm has been washed or not, MOT denotes the number of sperm cells in the straw. But what does MOT actually mean?
MOT is short for 'Motile Total, which is the way to express how many sperm cells are moving forward. MOT is counted in millions per millilitre, so MOT20+ means that there are more than 20 million forward-moving sperm cells in a millilitre. A straw of donor sperm used for insemination contains 0.5 millilitres, so a straw of MOT20+ will give you a total of over 10 million sperm cells for insemination. MOT10+ straws contain about half of the same amount.