CU Boulder scientists are conducting a research study comparing chemical concentrations between menstrual blood, circulating blood and urine. 

Eligibility requirements include:

• 18 years or older
• Not currently or trying to become pregnant
• A regular user of a menstrual cup; willing to use a study-provided cup to collect a menstrual sample

Participants will be compensated for their time and effort in the form of a $25 Amazon gift card. Please contact perio.studies@colorado.edu for more information!