34925-8

Immature monocytes/Leukocytes in Blood

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Part Descriptions

LP157588-7   Leukocytes
Leukocytes or white blood cells (WBCs) are immune cells that fight infection, neoplasms and other inflammatory conditions, and mediate allergic responses. There are five types of WBCs normally present in the circulation that are all derived from a similar stem cell in the bone marrow. The five type of WBCs are divided into two groups based on the presence or absence of granules in the cytoplasm. The granulocytes include the neutrophils, basophils and eosinophils. The non-granulocytes include the lymphocytes and the monocytes. The neutrophils fight infection by ingesting and digesting bacteria. Eosinophils and basophils respond to allergic reactions and are capable of ingesting antigen-antibody complexes. Monocytes phagocytose bacteria and release interferon to stimulate the immune system. Lymphocytes are divided into T-cells and B-cells. T-cell immunity is cellular and involves the activation of phagocytes and B-cell immunity uses antibodies to fight infection. Both elevated and low leukocyte counts can be markers of infection and malignancy, and low leukocyte counts are associated with a variety of primary and secondary immunodeficiencies, depending on the WBC type(s) that are out of range. (Mosby's manual of diagnostic and laboratory tests, Kathleen Deska Pagana; Timothy James Pagana, Elsevier St. Louis, Mo ©2010) Source: Regenstrief LOINC

LP31551-2   Monocytes.immature
A monocyte is a mononuclear leukocyte, intimately involved in the initiaton of an immune response. It also protects against blood-borne pathogens and migrates quickly to sites of infection in the tissues. Monocytes are usually identified in stained smears by their large bilobed nucleus. They are produced by the bone marrow from hematopoietic stem cell precursors called monoblasts. The monoblast is the first stage of monocyte maturation. The developmental stages (4 subtypes) of the monocytes are: monoblast, promonocyte, immature monocyte, and mature monocyte. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia , Monocytes

LP31551-2   Monocytes.immature
There seems to be some ambiguity regarding precise morphological definition of "immature monocyte" in the literature, but there have been attempts to clarify (Haematologica 2009;94:994-997.). There are considered 4 developmental stages beginning with monoblast, followed by promonocyte, then immature monocyte, then mature monocyte. From what can be gleaned from the literature, an immature monocyte would be called by having some less mature features(nucleus not as lobular, chromatin perhaps not as condensed, slightly more basophilic than mature, and somewhat smaller than mature). Evaluation of this lineage in blood and bone marrow can be indicative of leukemia type. Source: Regenstrief LOINC

Fully-Specified Name

Component

Monocytes.immature/Leukocytes

Property

NFr

Time

Pt

System

Bld

Scale

Qn

Method

Additional Names

Long Common Name

Immature monocytes/Leukocytes in Blood

Short Name

Imm Moncytes NFr Bld

Display Name

Immature monocytes/Leukocytes (Bld)

Consumer Name Alpha Get Info

Immature monocytes/White Blood Cells, Blood

Basic Attributes

Class

HEM/BC

Type

Laboratory

First Released

Version 2.11

Last Updated

Version 2.79 (NAM)

Change Reason

Release 2.79: COMPONENT: Triggered by Coll w SCT: This is a specific fraction case where the denominator is percentage or /100. Because the logic is that the percentage piece is captured by Property: NFr (Numeric Fraction), and by Unit: %, therefore, it is redundant to include "100" in the component;

Order vs. Observation

Observation

Member of these Panels

Language Variants Get Info

Related Names

• Blood
• HEMATOLOGY/CELL COUNTS
• Imm
• Imm Moncytes
• Immat
• Leuc
• Leuk
• Leukocyte
• Lkcs
• Mono
• Monocyte
• Monos
• Number fraction
• Percent
• Point in time
• QNT
• Quan
• Quant
• Quantitative
• Random
• WB
• WBC
• WBCs
• White blood cell
• White blood cells
• Whole blood

Example Units

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CodeSystem lookup

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LOINC Copyright

Copyright © 2025 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.