LOINCActiveOrder

LOINC Code 29582-4: Differential panel (Syn fld)

29582-4 is a LOINC code used to identify Differential panel (Syn fld) 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 Differential panel. It is commonly used with the system or sample type Synv 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 Differential panel. It is commonly used with the system or sample type Synv 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: Order
  • Panel type: Panel

What it does not mean

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

Key facts

  • Differential panel - Synovial fluid
  • Differential panel
  • Diff; Diff Pnl; Differl; Differn; HEMATOLOGY/CELL COUNTS; Joint aspirate; Joint fld; Joint flu; Joint fluid; Pan; PANEL.HEMATOLOGY& CELL COUNTS; Panl; Pnl; Point in time; Random; SF; SNV; Syn; Syn fl; Synov; Synovial fluid

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

Differential panel (Syn fld)Differential panel - Synovial fluidDiff Pnl SnvDifferential panelPANEL.HEM/BCDifferential panel, Synovial fluid-

Frequently asked questions

Code details

Code29582-4
SystemLOINC
Display nameDifferential panel (Syn fld)
DescriptionDifferential panel
Short nameDiff Pnl Snv
ComponentDifferential panel
Property-
TimingPt
System (specimen)Synv fld
Scale-
ClassPANEL.HEM/BC
StatusACTIVE
Order/ObservationOrder

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.03
Last changed2.42

Consumer names

Differential panel, Synovial fluid

Part names

Differential panel-PtSynv fldPoint in time (spot)Synovial 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 29582-4 | HealthAssure