You must be over 21 and in excellent health with a normal height and weight (your body mass index, or BMI, should not exceed 27). You must be familiar with the medical history of your parents and extended family (so women who were adopted traditionally are ineligible). You should not smoke, drink, or engage in risky behaviors.  Distinguished academic achievement and attractiveness are especially valued characteristics. The ethnic backgrounds in greatest demand are Caucasian and Asian (especially Chinese and Indian). There is no official maximum age, but the best candidates are under 30. Most candidates over 30 are hard to match unless they have donated successfully before. In order to be an egg donor, you will fill out a lot of forms and answer a lot of questions. It is important to be as honest as possible, so the right match can be made for you. Your honesty, maturity, and responsibility levels will be evaluated during your psychological screening, so only the dedicated need apply.