LOINC
Version 2.67

51645-0Micromegakaryocytes [Presence] in Blood by Light microscopyActive

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

Short Name
Micromegakaryocytes Bld Ql Smear
Display Name
Micromegakaryocytes LM Ql (Bld)

Basic Attributes

Class
HEM/BC
Type
Laboratory
First Released
Version 2.24
Last Updated
Version 2.56
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

Example Answer List LL360-9

Source: Regenstrief Institute

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

Language Variants Get Info

zh-CNChinese (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
nl-NLDutch (NETHERLANDS)
micromegakaryocyten:aanwezigheid:moment:bloed:ordinaal:microscopie.licht
et-EEEstonian (ESTONIA)
Mikromegakarüotsüüdid:PrThr:Pt:B:Ord:Valgusmikroskoopia
fr-BEFrench (BELGIUM)
Micromégakaryocytes:PrThr:Temps ponctuel:Sang:Ordinal:Microscopie.fond clair
fr-CAFrench (CANADA)
Micromégakaryocytes:Présence-Seuil:Temps ponctuel:Sang:Ordinal:Microscopie.fond clair
fr-FRFrench (FRANCE)
Micromégacaryocytes:Présence/Seuil:Ponctuel:Sang:Qualitatif:Microscopie optique
de-ATGerman (AUSTRIA)
Mikromegakary.ql.mi.
de-DEGerman (GERMANY)
Mikromegakaryozyten:AKnz:Pkt:Blut:Ord:Manuelle Zählung
it-ITItalian (ITALY)
Micromegacariociti:PrThr:Pt:Sangue:Ord:Microscopia.ottica
pt-BRPortuguese (BRAZIL)
Micromegacariocítos:ACnc:Pt:SgTotal:Ord:Contagem manual
ru-RURussian (RUSSIAN FEDERATION)
Микромегакариоциты:PrThr:ТчкВрм:Кр:Пор:Микроскопия.световой
es-ESSpanish (SPAIN)
Micromegacariocitos:PrThr:Punto temporal:Sangre:Ord:Microscopía de luz
tr-TRTurkish (TURKEY)
Mikromegakaryositler:MevcEşik:Zmlı:Kan:Srl:Mikroskopi.ışık

LOINC FHIR® API Example - CodeSystem Request Get Info

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