CREATININE, Fluid

A fluid creatinine test is advised by a doctor when a urine leak is suspected, such as unexplained abdominal fluid buildup (ascites), increased drain output after surgery, or fluid leakage after pelvic, kidney, or bladder surgery or trauma. It helps detect urinomas, bladder or ureter injury, and urinary fistulas, and is done alongside serum creatinine.

A fluid creatinine test uses a fluid sample collected by a doctor through paracentesis or thoracentesis, or directly from a surgical drain. Inform your doctor about any blood thinners, allergies, bleeding disorders, or pregnancy. Fasting is usually not required. A blood sample for serum creatinine is usually taken at the same time for comparison.

No, fasting is usually not required for a fluid creatinine test. You can eat and drink normally unless your doctor advises otherwise, for example if sedation is planned for the fluid collection procedure. Inform your doctor about any blood thinners or bleeding disorders, and follow the hospital's specific instructions.