LOINCActiveBoth

LOINC Code 57843-5: RBC Auto (Periton fld) [#/Vol]

57843-5 is a LOINC code used to identify RBC Auto (Periton fld) [#/Vol] 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. It is commonly used with the system or sample type Periton fld.

Reviewed by HealthAssure Clinical TeamUpdated 25 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. It is commonly used with the system or sample type Periton fld.

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: Both
  • Method: Automated count

What it does not mean

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

Key facts

  • Erythrocytes [#/volume] in Peritoneal fluid by Automated count
  • Erythrocytes
  • #; ABS; absolute; absolutes; Ascites; Ascitic fluid; Ascitis; Auto; Automated detection; Cnt; Count; Count/volume; CT; Discocytes; Elec; Elect; Electr; Erthrocyte; Erythrocyte; HEMATOLOGY/CELL COUNTS; Number concentration; Number Concentration (count/vol); Peritoneal fluid; Point in time; Prt; QNT; Quan; Quant; Quantitative; Random; RBC; RBCS; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells

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 Auto (Periton fld) [#/Vol]Erythrocytes [#/volume] in Peritoneal fluid by Automated countRBC # Prt AutoErythrocytesHEM/BCRed Blood Cell (RBC) Count, Peritoneal fluidNCnc

Frequently asked questions

Code details

Code57843-5
SystemLOINC
Display nameRBC Auto (Periton fld) [#/Vol]
DescriptionErythrocytes
Short nameRBC # Prt Auto
ComponentErythrocytes
PropertyNCnc
TimingPt
System (specimen)Periton fld
ScaleQn
MethodAutomated count
ClassHEM/BC
Example units10*12/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.70

Consumer names

Red Blood Cell (RBC) Count, Peritoneal fluid

Part names

ErythrocytesNCncPtPeriton fldQnAutomated countNumber ConcentrationPoint in time (spot)Peritoneal fluid

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 57843-5 | HealthAssure