LOINCActiveObservation

LOINC Code 56145-6: CD55+CD59 deficient RBC+Granulocytes Nar (Bld) [Interp]

56145-6 is a LOINC code used to identify CD55+CD59 deficient RBC+Granulocytes Nar (Bld) [Interp] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Erythrocytes+Granulocytes.CD55+CD59 deficient. It is commonly used with the system or sample type Bld.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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+Granulocytes.CD55+CD59 deficient. 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+Granulocytes [Interpretation] in Blood Narrative
  • Erythrocytes+Granulocytes.CD55+CD59 deficient
  • 1F-5Ag; Blood; CD55 Granulocytes; CD55+CD59 def RBC+Gran; CD59.deficient; CELL MARKERS; DAF; Decay accelerating factor; Discocytes; Erthrocyte; Erythrocyte; Gran; Grans; Granulocyte; Granulocytes; H19; HRF20; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; MACIF; Membrane Inhibitor of Reactive Lysis; MIRL; Narrative; P-18; Point in time; Protectin; Random; RBC; RBCS; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; Report; 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

CD55+CD59 deficient RBC+Granulocytes Nar (Bld) [Interp]CD55+CD59 deficient RBC+Granulocytes [Interpretation] in Blood NarrativeCD55+CD59 def RBC+Gran Bld-ImpErythrocytes+Granulocytes.CD55+CD59 deficientCELLMARKInterpretation of CD55+CD59 Deficient RBC+Granulocytes test result, BloodImp

Frequently asked questions

Code details

Code56145-6
SystemLOINC
Display nameCD55+CD59 deficient RBC+Granulocytes Nar (Bld) [Interp]
DescriptionErythrocytes+Granulocytes.CD55+CD59 deficient
Short nameCD55+CD59 def RBC+Gran Bld-Imp
ComponentErythrocytes+Granulocytes.CD55+CD59 deficient
PropertyImp
TimingPt
System (specimen)Bld
ScaleNar
ClassCELLMARK
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.73

Consumer names

Interpretation of CD55+CD59 Deficient RBC+Granulocytes test result, Blood

Part names

Erythrocytes+Granulocytes.CD55+CD59 deficientImpPtBldNarCD55+CD59 deficient RBC+GranulocytesImpression/interpretation of studyPoint in time (spot)Blood

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 56145-6 | HealthAssure