LOINCActiveObservation

LOINC Code 33768-3: Leukocyte clumps Auto (U) [#/Vol]

33768-3 is a LOINC code used to identify Leukocyte clumps Auto (U) [#/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 Leukocyte clumps. It is commonly used with the system or sample type Urine.

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

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: Automated count

What it does not mean

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

Key facts

  • Leukocyte clumps [#/volume] in Urine by Automated count
  • Leukocyte clumps
  • Automated counters measure the number concentration directly and calculate values for the per HPF (or per LPF) when the laboratory chooses them.
  • #; ABS; absolute; absolutes; Auto; Automated detection; Cnt; Count; Count/volume; CT; Elec; Elect; Electr; Leuc; Leuk; Leukocytes; Lkcs; Number concentration; Number Concentration (count/vol); Point in time; QNT; Quan; Quant; Quantitative; Random; UA; UR; URINALYSIS; Urn; WBC; WBC clumps; WBCs; White blood cell; White blood 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

Leukocyte clumps Auto (U) [#/Vol]Leukocyte clumps [#/volume] in Urine by Automated countWBC clumps # Ur AutoLeukocyte clumpsUAWhite blood cell clumps, UrineNCnc

Frequently asked questions

Code details

Code33768-3
SystemLOINC
Display nameLeukocyte clumps Auto (U) [#/Vol]
DescriptionLeukocyte clumps
Short nameWBC clumps # Ur Auto
ComponentLeukocyte clumps
PropertyNCnc
TimingPt
System (specimen)Urine
ScaleQn
MethodAutomated count
ClassUA
Example units/uL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.73

Consumer names

White blood cell clumps, Urine

Part names

Leukocyte clumpsNCncPtUrineQnAutomated countNumber ConcentrationPoint in time (spot)

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 33768-3 | HealthAssure