42327-7

Leukocytes [Presence] in Stool by Methylene blue stain

Active

Part Descriptions

LP14419-3   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

LP6387-7   Methylene blue stain
Methylene Blue is a commonly used synthetic basic dye that also exhibits antioxidant, antimalarial, antidepressant and cardioprotective properties. Methylene blue stains to negatively charged cell components like nucleic acids. During lymphatic bed of a tumor during oncologic surgery methylene blue is utilized to help stain lymph node draining from the tumor to promote visual localization.[PubChem: Methylene-blue] Source: Regenstrief LOINC

Fully-Specified Name

Component

Leukocytes

Property

PrThr

Time

Pt

System

Stool

Scale

Ord

Method

Methylene blue stain

Additional Names

Long Common Name

Leukocytes [Presence] in Stool by Methylene blue stain

Short Name

WBC Stl Ql MB Stn

Display Name

WBC Methylene blue stain Ql (Stl)

Consumer Name Alpha Get Info

White blood cell (WBC) count, Stool

Basic Attributes

Class

HEM/BC

Type

Laboratory

First Released

Version 2.16

Last Updated

Version 2.73 (MIN)

Change Reason

The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016.

Order vs. Observation

Both

Common Test Rank Get Info

1756

Language Variants Get Info

Related Names

• Bowel movement
• Faecal
• Faeces
• Fecal
• Feces
• HEMATOLOGY/CELL COUNTS
• Leuc
• Leuk
• Leukocyte
• Lkcs
• MB Stn
• Ordinal
• Point in time
• PR
• QL
• Qual
• Qualitative
• Random
• Screen
• St
• Stains
• Stl
• Stn
• Stool = Fecal
• WBC
• WBCs
• White blood cell
• White blood cells

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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.