LOINC Code 53769-6: CD55+CD59 deficient RBC actual/normal (Bld) [Relative ratio]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Erythrocytes.CD55+CD59 deficient actual/normal. It is commonly used with the system or sample type Bld.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Observation

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• CD55+CD59 deficient RBC actual/normal in Blood
• Erythrocytes.CD55+CD59 deficient actual/normal
• Glycophosphatidylinositol(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.
• 1F-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; P-18; Point in time; Protectin; QNT; Quan; Quant; Quantitative; Random; RBC; RBCS; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; Relative ratio; WB; Whole blood

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions