LOINCActiveObservation

LOINC Code 20408-1: WBC Test strip (U) [#/Vol]

20408-1 is a LOINC code used to identify WBC Test strip (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 Leukocytes. It is commonly used with the system or sample type Urine.

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 Leukocytes. 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: Test strip

What it does not mean

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

Key facts

  • Leukocytes [#/volume] in Urine by Test strip
  • Leukocytes
  • Reported as number of leukocytes per microliter - measured from amount of leukocyte esterase
  • #; ABS; absolute; absolutes; Cnt; Count; Count/volume; CT; Dip stick; Dipstick; Leuc; Leuk; Leukocyte; Lkcs; Number concentration; Number Concentration (count/vol); Point in time; Random; SmQn; UA; UR; URINALYSIS; Urn; WBC; 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

WBC Test strip (U) [#/Vol]Leukocytes [#/volume] in Urine by Test stripWBC # Ur StripLeukocytesUAWhite blood cell (WBC) count, UrineNCnc

Frequently asked questions

Code details

Code20408-1
SystemLOINC
Display nameWBC Test strip (U) [#/Vol]
DescriptionLeukocytes
Short nameWBC # Ur Strip
ComponentLeukocytes
PropertyNCnc
TimingPt
System (specimen)Urine
ScaleSemiQn
MethodTest strip
ClassUA
Example unitsLeu/uL; WBCS/uL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.75

Consumer names

White blood cell (WBC) count, Urine

Part names

LeukocytesNCncPtUrineSemiQnTest stripNumber 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 20408-1 | HealthAssure