LOINCActiveObservation

LOINC Code 33372-4: Blasts/Leukocytes (Periton fld)

33372-4 is a LOINC code used to identify Blasts/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 Blasts/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 Blasts/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

  • Blasts/Leukocytes in Peritoneal fluid
  • Blasts/Leukocytes
  • Ascites; Ascitic fluid; Ascitis; Blast; HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; Number fraction; Percent; Peritoneal fluid; Point in time; Prt; QNT; Quan; Quant; Quantitative; Random; 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

Blasts/Leukocytes (Periton fld)Blasts/Leukocytes in Peritoneal fluidBlasts NFr PrtBlasts/LeukocytesHEM/BCBlasts/White Blood Cells, Peritoneal fluidNFr

Frequently asked questions

Code details

Code33372-4
SystemLOINC
Display nameBlasts/Leukocytes (Periton fld)
DescriptionBlasts/Leukocytes
Short nameBlasts NFr Prt
ComponentBlasts/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 released2.09
Last changed2.79

Consumer names

Blasts/White Blood Cells, Peritoneal fluid

Part names

Blasts/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 33372-4 | HealthAssure