| GCU | gonococcal urethritis |
|---|---|
| GU | gastric ulcer; genitourinary; glucose uptake; glycogenic unit; gonococcal urethritis; gravitational ... |
| NGU | nongonococcal urethritis |
| NSU | neurosurgical unit; nonspecific urethritis |
| PGU | peripheral glucose uptake; postgonococcal urethritis |