Supplementary_file: Data for total serum testosterone measurements performed at the University of Iowa Hospitals and Clinics from May 1, 2009 to March 31, 2022 along with whether patient was taking testosterone medication at time of serum measurement. The data elements include: deidentified patient number, legal sex in the electronic medical record, gender identity in electronic medical record (if available), sex assigned at birth in electronic medical record (if available), patient in years at time of serum testosterone measurement (greater than 89 years expressed as ">89"), deidentified order number for the testosterone lab measurement, total serum testosterone concentration (ng/dL), category for the serum testosterone concentration, location type (outpatient or inpatient) for when serum testosterone measurement was made, methodology for serum testosterone measurement (immunoassay or mass spectrometry), testosterone medication prescription at time of serum testosterone measurement (yes or no), route of administration for testosterone medication (if applicable), specific testosterone medication and dose (if applicable; in some cases dose was unknown).