Alberta Precision Laboratories

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Organization:

Alberta Precision Laboratories

Message Alert:

PLEASE NOTE: This Test Directory is in an interim state and due to changes pertaining to the DynaLIFE transition, performing site for routing has not been updated. Please refer to Laboratory Information System for appropriate routing.

Test Name/Synonym:

Urea Reduction Ratio (URR)

Test Includes:

This test includes a post-dialysis urea test and a urea reduction ratio (URR) calculation that requires a pre-dialysis urea result.

Collection Alert:

The pre-dialysis specimen must be collected within 12 hours before the post-dialysis specimen.

LABID (Connect Care):

LAB5133

Test Code:

CALGARY ZONE	UREAPD2
SOUTH ZONE	ORDER BOTH: PRE-DIALYSIS: PRD1 POST-DIALYSIS: POD1

Specimen Type:

Blood

Primary Container:

MINT LIHEP PST

Alternate Containers:

GOLD SST

Minimum Collection Volume:

Calgary Zone: 0.2 mL plasma or serum
South Zone: 0.5 mL plasma or serum

Test Resources:

General Laboratory Requisition – 21302 – write test name under “Additional Tests”

Calgary Zone: Microcollection Minimum Whole Blood Volumes

Method and Interpretation of Results:

The Urea Reduction Ratio (URR) is a calculation that provides an index of dialysis therapy delivered to a patient. The URR is an alternate to the value of Kt/V and has equivalent clinical utility. A URR value of 65% indicates adequate hemodialysis and is similar to a Kt/V value of 1.2.

Testing Schedule:

Daily

Testing Area:

Biochemistry

Performing Site:

Calgary Zone	Banff Mineral Springs Hospital Diagnostic and Scientific Centre Foothills Medical Centre Peter Lougheed Centre South Health Campus
South Zone	Chinook Regional Hospital, Lethbridge Medicine Hat Regional Hospital

Last Updated On:

Friday, May 7, 2021