Abstract: A disposable urine collector assembly includes a diaper (10) having at the middle an adhesive patch 32 with opening placed over the urinary organ to catch urine and send it to the plastic collection bag (20) situated on the other side of the diaper. The collection bag is made of a small inner bag (24) enclosed in a bigger outer bag (26) with provision for transfer of urine from the inner to the outer bag, however, minimizing reverse or back flow. At the bottom of the outer collection bag is an elongated end with tear-apart section (30) where the urine is withdrawn, transferred to a urine specimen container and sent to the laboratory for analysis. Once the urine sample has been obtained, the collector assembly is detached and properly disposed.