Plasma and Serum Study

You may not participate if any of the following apply to you:

Under age 18
Over age 35
Inaccessible veins
Menstrual cycles occur more frequently than 25 days OR does not occur within 35 days on average
BMI > 30, in accordance to Center for Disease Control criteria for obesity. If you are unsure, you can calculate this using your height and weight at: BMI Calculator
Abnormal PAP test within the past year (unless a follow-up PAP test result is normal)
Current pregnancy, attempting pregnancy, or sexually active and not using effective barrier contraception (condoms)
Intrauterine device in place (IUD)
History of more than one prior spontaneous pregnancy loss.
Uterine abnormalities, such as fibroids
Breastfeeding
Chronic use of hormonal medications. Examples include, but are not limited to, birth control pills and other hormonal contraceptives.
Underlying medical disorders