Abstract: An all-purpose drainage catheter which includes an all-purpose drainage catheter lumen, an extension tubing, a collection bag, a catheter hub, a Luer valve. The extension tubing inserted into the all-purpose drainage catheter lumen. The collection bag is fluidly coupled to the extension tubing. The Luer valve facilitates nephrostomy care so that when the all-purpose drainage catheter is in place urine flows from the renal pelvis into the all-purpose drainage catheter lumen, the extension tubing and the collection bag. The Luer valve employs a scalloped Luer-style male connector which, when screwed into the catheter hub, further allows urine to flow from the renal pelvis into the all-purpose drainage catheter lumen, the extension tubing and the collection bag. The all-purpose drainage catheter includes an outer catheter hub, an inner catheter hub coupled to the Luer valve at one end thereof and insertedly coupled to the outer catheter hub.