Gamma Globulin Observations and Outcomes Database for Patients With Primary Immunodeficiency Disease (GOOD-SHEPARD-PI)

Inclusion Criteria: * Diagnosis of any form of Primary Immunodeficiency Disease * Age at enrollment ≥ 7 * Sign informed consent/assented to participation * Ability to read and write English * Understanding of study procedures and ability to comply with study procedures for the entire length of the study * Receiving Ig under the discretion of the patient's treating physician in accordance with standard treatment practices * Have been on or is between doses of Ig under the discretion of the patient's treating physician in accordance with standard treatment practices * Being considered to be prescribed Ig under the discretion of the patient's treating physician in accordance with standard treatment practices * Determined to be eligible for infusion services by BriovaRx Infusion Services (formerly AxelaCare Health Solutions, LLC.) in collaboration with the patient's prescribing physician Exclusion Criteria: * Children (age ≤ 6 years) * Prisoners, and other wards of the state * Determined to have non-competency of data collection requirements (physical assessments and use of an iPAD™) by the study participant's caregiver