51645-0

Micromegakaryocytes [Presence] in Blood by Light microscopy

Active

Part Description

LP66394-5 Micromegakaryocytes
Micromegakaryocytes are caused by dysmegakaryocytopoiesis, meaning the bone marrow is not making normal megakaryocytes. Micromegakaryocytes are typically seen in the peripheral blood in Myelodysplastic Syndromes (MDS) which are considered "pre-leukemia" syndromes.

The most obvious distinguishing characteristic of a micromegakaryocyte is the cytoplasm which is pale blue and may contain pink granules reminiscent of a mature platelet. Smudge-like nuclear chromatin also aids in the identification of a cell as a micromegakaryocyte. Source: Regenstrief LOINC

Fully-Specified Name

Component: Micromegakaryocytes
Property: PrThr
Time: Pt
System: Bld
Scale: Ord
Method: Microscopy.light

Additional Names

Long Common Name: Micromegakaryocytes [Presence] in Blood by Light microscopy
Short Name: Micromegakaryocytes Bld Ql Smear
Display Name: Micromegakaryocytes LM Ql (Bld)
Consumer Name Alpha Get Info: Micromegakaryocytes, Blood

Example Answer List: LL360-9

Source: Regenstrief Institute

Answer	Code	Score	Answer ID
PositiveCopyright http://snomed.info/sct ID:10828004 Positive (qualifier value)			LA6576-8
NegativeCopyright http://snomed.info/sct ID:260385009 Negative (qualifier value)			LA6577-6

Basic Attributes

Class: HEM/BC
Type: Laboratory
First Released: Version 2.24
Last Updated: Version 2.73 (MIN)
Change Reason: Microscopy is a better way to describe this test than manual count; 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: Observation
Common Test Rank Get Info: 8087

Language Variants Get Info

Tag	Language	Translation
de-AT	German (Austria)	Synonyms: Mikromegakary.ql.mi.
de-DE	German (Germany)	Mikromegakaryozyten:Nachweis oder Schwellenwert:Zeitpunkt:Blut:Ordinal:Mikroskopie.Licht
el-GR	Greek (Greece)	Μικρομεγακαρυοκύτταρα:PrThr:Pt:Αίμα:Ord:Μικροσκόπηση.φωτός Synonyms: PrThr Μικρομεγακαρυοκύτταρα
es-ES	Spanish (Spain)	Micromegacariocitos:PrThr:Punto temporal:Sangre:Ord:Microscopía de luz
es-MX	Spanish (Mexico)	Micromegacariocitos:Presencia o umbral:Punto temporal:Sangre:Ordinal:Microscopía óptica
et-EE	Estonian (Estonia)	Mikromegakarüotsüüdid:PrThr:Pt:B:Ord:Valgusmikroskoopia Synonyms: Järgarvuline Juhuslik Veri
fr-CA	French (Canada)	Micromégakaryocytes:Présence-Seuil:Temps ponctuel:Sang:Ordinal:Microscopie.fond clair
fr-FR	French (France)	Micromégacaryocytes:Présence/Seuil:Ponctuel:Sang:Qualitatif:Microscopie optique
fr-BE	French (Belgium)	Micromégakaryocytes:PrThr:Temps ponctuel:Sang:Ordinal:Microscopie.fond clair
it-IT	Italian (Italy)	Micromegacariociti:PrThr:Pt:Sangue:Ord:Microscopia.ottica Synonyms: Ematologia (coagulazione) conta differenziale Microscopia ottica Presenza o Soglia Punto nel tempo (episodio) Sangue
nl-NL	Dutch (Netherlands)	micromegakaryocyten:aanwezigheid:moment:bloed:ordinaal:microscopie.licht Synonyms: lichtmicroscopie
pl-PL	Polish (Poland)	Mikromegakariocyty:granica wykrywalności:punkt w czasie:krew:półilościowy:mikroskopia świetlna Synonyms: Mikromegakariocyty
pt-BR	Portuguese (Brazil)	Micromegacariocítos:ACnc:Pt:SgTotal:Ord:Contagem manual Synonyms: Megakaryocyte hypoploidy; Arbitrary concentration; Point in time; Random; Blood; WB; Whole blood; Ql; Ordinal; QL; Qualitative; Qual; Screen; Manl; HEMATOLOGY/CELL COUNTS; HEMATOLOGY/CELL COUNTS
ru-RU	Russian (Russian Federation)	Микромегакариоциты:PrThr:ТчкВрм:Кр:Пор:Микроскопия.световой Synonyms: Кровь Порядковый Точка во времени;Момент
tr-TR	Turkish (Turkey)	Mikromegakaryositler:MevcEşik:Zmlı:Kan:Srl:Mikroskopi.ışık Synonyms: Mevcut
zh-CN	Chinese (China)	小巨核细胞:存在情况或阈值:时间点:全血:序数型:显微镜检查.光学 Synonyms: 依次型;分类顺序型;定性的;序数型（或称等级型）;性质上的;有序型;有序性分类应答;有序性分类结果;秩次型;等级型;筛查;顺序型光学显微镜方法;光学显微镜方法.光学;光学显微镜检;光学显微镜检.光学;光学显微镜检查;光镜检查;光镜检查.光学;光镜法;显微镜检查.普通光学;普通光学显微镜检查;镜检;镜检.光学存在情况;存在;存在与否;是否存在;阈值;界值;界限;阀值;临界值;存在情况（存在、存在与否、是否存在）或阈值（界值、界限、阀值、临界值）小巨核时刻;随机;随意;瞬间显微学;显微术;显微镜学;显微镜检术;显微镜检查;显微镜检查方法;显微镜检查法;显微镜检查类方法;显微镜检查类检验方法;显微镜法;镜检;镜检术;镜检法血;血液血液学/细胞计数;血液学与细胞计数

LOINC Terminology Service (API) using HL7^® FHIR^® Get Info

CodeSystem lookup: https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=51645-0

Third Party Copyright

This material includes SNOMED Clinical Terms® (SNOMED CT®) which is used by permission of the International Health Terminology Standards Development Organisation (IHTSDO) under license. All rights reserved. SNOMED CT® was originally created by The College of American Pathologists. "SNOMED" and "SNOMED CT" are registered trademarks of the IHTSDO.

This material includes content from the US Edition to SNOMED CT, which is developed and maintained by the U.S. National Library of Medicine and is available to authorized UMLS Metathesaurus Licensees from the UTS Downloads site at https://uts.nlm.nih.gov.

Use of SNOMED CT content is subject to the terms and conditions set forth in the SNOMED CT Affiliate License Agreement. It is the responsibility of those implementing this product to ensure they are appropriately licensed and for more information on the license, including how to register as an Affiliate Licensee, please refer to http://www.snomed.org/snomed-ct/get-snomed-ct or info@snomed.org<mailto:info@snomed.org>. This may incur a fee in SNOMED International non-Member countries.

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.