At Visit 1, patients who agree to participate in the study will come to the site. They will provide written informed consent and undergo a complete physical examination, including a nasal examination, and medical history collection. Blood pressure, heart rate, weight, and height measurements (from which body mass index [BMI] will be determined) will also be performed. Blood will be drawn at a local lab for safety assessment. However, if these values have already been documented in their patient file from the preceding 6 months, then those values will be entered into the eCRF. Previous treatment for hypogonadism (drug and nondrug; daily dose) will be recorded, as well as other concomitant treatment with drug or nondrug therapies. Study questionnaires Treatment Satisfaction Questionnaire for Medication (TSQM) and quantitative Androgen Deficiency in the Aging Male (qADAM) will be reviewed and subjects will be given instructions for proper completion of the instruments. Patients will complete Part A of the Patient Preference and Use Questionnaire. Patients will also be provided with a prescription for a 90-day supply of the study medication, NATESTO, and a Study Drug Access Card that will be used for payment purposes at the patient's preferred pharmacy.