LOINCActiveObservation

LOINC Code 68902-6: RBC Unsp time LM (Urine sed) [#/Vol]

68902-6 is a LOINC code used to identify RBC Unsp time LM (Urine sed) [#/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 Urine sed.

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. It is commonly used with the system or sample type Urine sed.

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 [#/volume] by Light microscopy in Urine sediment collected for unspecified duration
  • Erythrocytes
  • #; ?Tm; ABS; absolute; absolutes; Cnt; Count; Count/volume; CT; Discocytes; Erthrocyte; Erythrocyte; Kidney; LM; Micro; Micros; Microscopic; Nephrology; Number concentration; Number Concentration (count/vol); QNT; Quan; Quant; Quantitative; RBC; RBCS; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; Renal; UA; UR; URINALYSIS; Urine sediment; Urn; UrnS

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 Unsp time LM (Urine sed) [#/Vol]Erythrocytes [#/volume] by Light microscopy in Urine sediment collected for unspecified durationRBC ?Tm # UrnS MicroErythrocytesUARed Blood Cell (RBC) Count, Urine sedimentNCnc

Frequently asked questions

Code details

Code68902-6
SystemLOINC
Display nameRBC Unsp time LM (Urine sed) [#/Vol]
DescriptionErythrocytes
Short nameRBC ?Tm # UrnS Micro
ComponentErythrocytes
PropertyNCnc
TimingXXX
System (specimen)Urine sed
ScaleQn
MethodMicroscopy.light
ClassUA
Example units/mm3
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.38
Last changed2.70

Consumer names

Red Blood Cell (RBC) Count, Urine sediment

Part names

ErythrocytesNCncXXXUrine sedQnMicroscopy.lightNumber ConcentrationUnspecifiedUrine sedimentLight 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.