2619-5
Methemoglobin [Presence] in Red Blood Cells
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Part Description
LP15729-4 Methemoglobin
Methemoglobin is a form of the oxygen-carrying protein hemoglobin, in which the iron in the heme group is in the Fe3+ state, not the Fe2+ of normal hemoglobin. Metheomglobin appears blue and is unable to carry oxygen. The NADH-dependent enzyme methemoglobin reductase (AKA diaphorase I) is responsible for converting methemoglobin back to hemoglobin. Normally 1-2% of people's hemoglobin is methemoglobin, a higher percentage than this can be genetic or caused by exposure to various chemicals and depending on the level can cause health problems. A higher level of methemoglobin will tend to cause a pulse oximeter to read closer to 85% regardless of the true level of oxygen saturation. Methemoglobinemia can be caused by genetic abnormalities such as diaphorase I deficiency, or abnormal hemoglobin variants. It can also be caused by certain oxidizing drugs (benzocaine), antibiotics (trimethoprim or sulfanamides), analine dyes, metoclopramide, chlorates, bromates, and nitrates. Infants under 6 months are particularly susceptible when exposed to nitrates, benzocaine, or even dehydration. Methemoglobinemia can be treated with supplemental oxygen and methylene blue.
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Source: Wikipedia,
Methemoglobin (Wikipedia)
LOINC Names Get Info
- Fully-Specified Name
- Methemoglobin:
PrThr: Pt: RBC: Ord: - Long Common Name
- Methemoglobin [Presence] in Red Blood Cells
- Short Name
- MetHgb RBC Ql
- Display Name
- Methemoglobin Ql (RBC)
- Consumer Name Alpha Get Info
- Methemoglobin, Red blood cells
Part Model Get Info
Basic Attributes
- Class
- CHEM
- Type
- Laboratory
- First Released
- Version 1.0
- Last Updated
- Version 2.56 (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
Language Variants Get Info
| Tag | Language | Translation |
|---|---|---|
| cs-CZ | Czech (Czechia) | Methemoglobin: |
| el-GR | Greek (Greece) | Μεθαιμοσφαιρίνη: Synonyms: CHEM Ord PrThr Pt Ερυθρά αιμοσφαίρια Μεθαιμοσφαιρίνη |
| es-MX | Spanish (Mexico) | Metahemoglobina: |
| es-AR | Spanish (Argentina) | metahemoglobina: |
| es-ES | Spanish (Spain) | Metahemoglobina: |
| et-EE | Estonian (Estonia) | Methemoglobiin: Synonyms: Erütrotsüüdid Järgarvuline Juhuslik |
| fr-CA | French (Canada) | Méthémoglobine: |
| fr-FR | French (France) | Méthémoglobine: |
| fr-BE | French (Belgium) | Méthémoglobine: |
| it-IT | Italian (Italy) | Metaemoglobina: Synonyms: Chimica Globuli rossi Metemoglobina Presenza o Soglia Punto nel tempo (episodio) |
| ko-KR | Korean (Korea, Republic Of) | 메트헤모글로빈: |
| nl-NL | Dutch (Netherlands) | methemoglobine: Synonyms: rode bloedcellen |
| pl-PL | Polish (Poland) | Methemoglobina: Synonyms: Methemoglobina |
| pt-BR | Portuguese (Brazil) | Metahemoglobina: Synonyms: ; |
| ru-RU | Russian (Russian Federation) | Метгемогломин: Synonyms: Порядковый Точка во времени; |
| tr-TR | Turkish (Turkey) | Methemoglobin: Synonyms: Mevcut RBC |
| zh-CN | Chinese (China) | 高铁血红蛋白: Synonyms: Hi; |
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LOINC Copyright
Copyright © 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://