LOINCActiveObservation

LOINC Code 30409-7: WBC other/Leukocytes (Periton fld)

30409-7 is a LOINC code used to identify WBC other/Leukocytes (Periton 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 Leukocytes other/Leukocytes. It is commonly used with the system or sample type Periton fld.

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 other/Leukocytes. It is commonly used with the system or sample type Periton 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

  • Leukocytes other/Leukocytes in Peritoneal fluid
  • Leukocytes other/Leukocytes
  • Ascites; Ascitic fluid; Ascitis; HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; Number fraction; Othr; Percent; Peritoneal fluid; Point in time; Prt; QNT; Quan; Quant; Quantitative; Random; WBC; WBC Other; 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 other/Leukocytes (Periton fld)Leukocytes other/Leukocytes in Peritoneal fluidWBC Other NFr PrtLeukocytes other/LeukocytesHEM/BCOther white blood cells/White Blood Cells, Peritoneal fluidNFr

Frequently asked questions

Code details

Code30409-7
SystemLOINC
Display nameWBC other/Leukocytes (Periton fld)
DescriptionLeukocytes other/Leukocytes
Short nameWBC Other NFr Prt
ComponentLeukocytes other/Leukocytes
PropertyNFr
TimingPt
System (specimen)Periton fld
ScaleQn
ClassHEM/BC
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.04
Last changed2.79

Consumer names

Other white blood cells/White Blood Cells, Peritoneal fluid

Part names

Leukocytes other/leukocytesNFrPtPeriton fldQnNumber FractionPoint in time (spot)Peritoneal 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 30409-7 | HealthAssure