LOINCActiveObservation

LOINC Code 35042-1: Variant lymphocytes (Pleur fld) [#/Vol]

35042-1 is a LOINC code used to identify Variant lymphocytes (Pleur 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 Lymphocytes.variant. It is commonly used with the system or sample type Plr fld.

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 Lymphocytes.variant. It is commonly used with the system or sample type Plr 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: Observation

What it does not mean

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

Key facts

  • Variant lymphocytes [#/volume] in Pleural fluid
  • Lymphocytes.variant
  • CLSI (formerly NCCLS) document "Reference Leukocyte Differential Count (Proportional) and Evaluation of Instrumental Methods", 1992, recommend the use of variant lymphocytes rather than atypical or reactive lymphocytes.
  • #; ABS; absolute; absolutes; Atypical lymphocytes; Cnt; Count; Count/volume; CT; HEMATOLOGY/CELL COUNTS; Lung; Lymp; Lymph; Lympho; Lymphocyte; Lymphs; Lymphs%; Number concentration; Number Concentration (count/vol); Pleural; Pleural fluid; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Reactive lymphocytes; Respiratory; thoracentesis fluid; Variant lymphocytes; Variant Lymphs

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

Variant lymphocytes (Pleur fld) [#/Vol]Variant lymphocytes [#/volume] in Pleural fluidVariant Lymphs # PlrLymphocytes.variantHEM/BCVariant lymphocytes, Pleural fluidNCnc

Frequently asked questions

Code details

Code35042-1
SystemLOINC
Display nameVariant lymphocytes (Pleur fld) [#/Vol]
DescriptionLymphocytes.variant
Short nameVariant Lymphs # Plr
ComponentLymphocytes.variant
PropertyNCnc
TimingPt
System (specimen)Plr fld
ScaleQn
ClassHEM/BC
Example units10*3/uL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.11
Last changed2.54

Consumer names

Variant lymphocytes, Pleural fluid

Part names

Lymphocytes.variantNCncPtPlr fldQnVariant lymphocytesNumber ConcentrationPoint in time (spot)Pleural 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 35042-1 | HealthAssure