Premenopausal women evaluating ovulatory function: the urine needs to be collected between days 19 and 25 of the menstrual cycle.
Menopausal women can collect the specimen on any day.
Women who are taking hormone replacement therapies or take oral contraceptives can continue to take these as normal.
48 hours prior to collecting your sample, avoid eating whole or ground flax seeds and sesame seeds.
24 hours prior to collecting your sample, avoid dilution of urine sample by consuming no more than 1/2 oz water/fluid per pound of body weight per day. For example: 130 lbs -65 oz (eight 8 oz glasses).