What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 45357-1: RBC.filamented LM Ql (Bld)

Name: LOINC Code 45357-1: RBC.filamented LM Ql (Bld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:30.176Z

45357-1 is a LOINC code used to identify RBC.filamented LM Ql (Bld) 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.filamented. 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.filamented. 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
Method: Microscopy.light

What it does not mean

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

Key facts

Erythrocytes.filamented [Presence] in Blood by Light microscopy
Erythrocytes.filamented
Blood; Discocytes; Erthrocyte; Erythrocyte; filamented rbc; HEMATOLOGY/CELL COUNTS; LM; Micro; Micros; Microscopic; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; RBC; RBCS; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; Screen; 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

RBC.filamented LM Ql (Bld)Erythrocytes.filamented [Presence] in Blood by Light microscopyfilamented rbc Bld Ql SmearErythrocytes.filamentedHEM/BCFilamented red blood cells, BloodPrThr

Frequently asked questions

Code details

Code45357-1

SystemLOINC

Display nameRBC.filamented LM Ql (Bld)

DescriptionErythrocytes.filamented

Short namefilamented rbc Bld Ql Smear

ComponentErythrocytes.filamented

PropertyPrThr

TimingPt

System (specimen)Bld

ScaleOrd

MethodMicroscopy.light

ClassHEM/BC

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.56

Consumer names

Filamented red blood cells, Blood

Part names

Erythrocytes.filamentedPrThrPtBldOrdMicroscopy.lightPresence or ThresholdPoint in time (spot)BloodLight microscopy

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.