Urea [Molar ratio] in Serum or Plasma --post dialysis/pre dialysis 77010-7
LOINC Code
| LOINC code | 77010-7 | ||
|---|---|---|---|
| name | Urea [Molar ratio] in Serum or Plasma --post dialysis/pre dialysis | ||
| description | The urea reduction ratio (URR) is a measure of urea clearance during hemodialysis and is calculated based on pre- and post-hemodialysis measurements of blood urea. The URR is directly associated with survival for patients on chronic hemodialysis (a higher URR is associated with lower risk of mortality). Urea clearance is routinely recorded and used to monitor the adequacy of hemodialysis and to compare the quality of hemodialysis delivery across dialysis facilities. [PMID: 10727547] | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | Urea^post dialysis/pre dialysis | ||
| property | SRto = Substance Ratio | ||
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | ||
| system | Ser/Plas Ser = Serum Plas = Plasma | ||
| scale | Qn = Quantitative: The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256 | ||
| method | |||
Additional Names | |||
| short name | Urea post/pre dialysis SerPl-sRto | ||
Basic Attributes | |||
| class | CHAL | ||
| type | 1 Laboratory | ||
| order vs. observation | Both | ||
| formula (readable) | Urea reduction ratio = [1-(post-dialysis blood urea/pre-dialysis blood urea)]*100 | ||
| example UCUM units | mmol/mmol The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org) | ||
| example unit | mmol/mmol | ||
Associated Observations | |||
LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations. | |||
History/Usage | |||
| first released | |||
| last updated | 2.52 | ||
| last change type | MIN - change to field other than name | ||
Related Names | |||
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Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.
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