53769-6

LOINC Code


LOINC code53769-6
name
descriptionGlycophosphatidylinositol(GPI)-linked membrane proteins CD55 (DAF-Decay Acclerating Factor) and CD59 (Membrane Inhibitor of Reactive Lysis-MIRL) are normally present on red blood cells to protect the cells from destruction by complement in the immune system. The expression of CD55 and CD59 is deficient in a subpopulation of patients with paroxysmal nocturnal hemoglobinuria(PNH). PNH is a disorder is which the stem cells lack proteins tht prevent them from being destroyed by the body, resulting in intermittant destruction of cells, usually at night. PNH is characterized by chronic intravascular hemolysis, bone marrow failure and life threatening thrombosis. Information from ARUP Laboratories and www.pnhfoundation.org, accessed 2008 01 18.
statusACTIVE

Fully-Specified Name

componentErythrocytes.CD55+CD59 deficient actual/normal
propertyRelRto  =  Relative Ratio
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemBld  =  Whole blood
scaleQn  =  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 name1F-5Ag; Act/Nor; Blood; CD55 & CD59 RBC; CD55 RBC; CD55+CD59 def RBC; CD55+CD59 RBC; CD59.deficient; CELL MARKERS; Control; DAF; Decay accelerating factor; Discocytes; Erthrocyte; Erythrocyte; H19; HRF20; MACIF; Membrane Inhibitor of Reactive Lysis; MIRL;

Basic Attributes

classCELLMARK
type1  Laboratory
order vs. observationCD55+CD59 def R
example UCUM units%
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)

Member of these Panels

55164-8

History/Usage

first released
last updated2.34
last change typeMIN  - change to field other than name
change reason%

Related Names

N

Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, 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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