Certified Clinical Hemodialysis Technician (CCHT) Practice Exam 2025 - Free CCHT Practice Questions and Study Guide

The amount of blood filtered through the dialyzer per unit of time is referred to as the dialysis clearance rate. This term specifically describes how effectively a dialyzer removes solutes from the blood and is usually expressed in milliliters per minute. It is a critical measurement in hemodialysis, as it helps assess the efficiency of the dialysis treatment in removing waste products, such as urea and creatinine, from the patient's blood. An adequate clearance rate is necessary to ensure that the patient’s blood is being appropriately cleaned during treatment.

The blood flow rate measures the speed of blood being pumped through the dialysis machine but does not directly quantify the filtration of blood through the dialyzer. Filtration speed may refer to various processes, including the speed of fluid removal, but it is not a standardized term for measuring blood filtration in dialysis. Ultrafiltration rate specifically pertains to the amount of excess fluid removed from the blood during dialysis, rather than the total volume of blood filtered. Thus, while these terms relate to kidney replacement therapy, they serve distinct purposes and are not synonymous with the clearance rate.