Patent ID: 8449495

Claim:
A dialysis system comprising: at least one dialysis fluid pump actuator; a drain line, a sample container and a solution container; a disposable cassette connected to the drain line, the sample container and the solution container, and including at least one pump chamber operable with the at least one pump actuator to pump fluid to and from the sample container, the disposable cassette further including a plurality of fluid ports configured to be connected fluidly to a plurality of fluid containers; and a processor programmed to cause the at least one pump actuator to operate the at least one pumping chamber to collect an effluent dialysis fluid sample by (i) selectively moving effluent dialysis fluid to the sample container and (ii) returning a portion of the effluent dialysis fluid from the sample container to the patient, the remainder of the effluent dialysis fluid in the sample container forming the sample.