PIGO

PIGO is an acronym used in medical testing to help interpret diagnostic results. It stands for Predicted, Indeterminate, Good, and Out—categories that describe the likelihood of a test indicating the presence or absence of a condition. "Predicted" suggests the test strongly indicates a condition; "Indeterminate" means the result is unclear; "Good" typically implies a confirmed or positive result; and "Out" indicates the test likely rules out the condition. This framework helps clinicians assess test outcomes systematically to make informed decisions about diagnosis and treatment plans.