4544-3
Hematocrit [Volume Fraction] of Blood by Automated count
Active
Term Description
This is the test that referral labs will report when hematocrit alone is ordered.
Part Description
LP16699-8 Erythrocyte
Erythrocytes or red blood cells (RBCs) are the cells in the circulation that carry oxygen to and remove carbon dioxide from the tissues throughout the body. They are produced in the bone marrow in response to erythropoietin where they transition through six stages over a seven day period. When they are released into the circulation, their nucleus has been extruded and they measure 6-8 microns in diameter. The lifespan of RBCs is about 120 days. When the RBC ages the cell membrane becomes less pliable and tears as they cell travels through the micro vessels of the body. The damaged RBCs are removed from the circulation by the spleen. Variations in number, shape and size of RBCs are indicative of many diseases and disorders. There are many factors that may lead to decreased numbers of RBCs including hemorrhage, hemolysis, iron or vitamin deficiency, marrow failure and more. Larger than normal RBCs may be indicative of liver disease while smaller than normal RBCs are seen in thalassemias and other anemias.(Mosby's manual of diagnostic and laboratory tests, Kathleen Deska Pagana; Timothy James Pagana, Elsevier St. Louis, Mo ©2010)
Source: Regenstrief LOINC
Reference Information
Type | Source | Reference |
---|---|---|
Mapping Guidance | Regenstrief Help | Most hematocrits delivered by referral and hospital laboratories will be produced by automated count and delivered with this code. Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations |
Webcontent | Lab Tests Online®Copyright Copyright © 2021 Lab Tests Online. All rights reserved. | Hematocrit |
Fully-Specified Name
- Component
- Erythrocyte/Blood
- Property
- VFr
- Time
- Pt
- System
- Bld
- Scale
- Qn
- Method
- Automated count
Additional Names
- Long Common Name
- Hematocrit [Volume Fraction] of Blood by Automated count
- Short Name
- Hct VFr Bld Auto
- Display Name
- Hematocrit Auto (Bld) [Volume fraction]
- Consumer Name Alpha Get Info
- Hematocrit, Blood
Basic Attributes
- Class
- HEM/BC
- Type
- Laboratory
- First Released
- Version 1.0
- Last Updated
- Version 2.79 (NAM)
- Change Reason
- Release 2.79: COMPONENT: Triggered by Coll w SCT:Hematocrit as a component is not an adequate description for a ratio, therefore Hematocrit is kept as a synonym, and the actual component is expressed as it should be:Erythrocyte/Blood;
- Order vs. Observation
- Both
- Common Test Rank Get Info
- 28
Member of these Panels
LOINC | Long Common Name |
---|---|
58410-2 | CBC panel - Blood by Automated count |
57021-8 | CBC W Auto Differential panel - Blood |
57782-5 | CBC W Ordered Manual Differential panel - Blood |
57022-6 | CBC W Reflex Manual Differential panel - Blood |
24364-2 | Obstetric 1996 panel - Serum and Blood |
93340-8 | PhenX - complete blood count protocol 220501 |
Language Variants Get Info
Tag | Language | Translation |
---|---|---|
de-DE | German (Germany) | Erythrozyten/Probenmaterialvolumen: |
es-AR | Spanish (Argentina) | hematócrito: |
es-ES | Spanish (Spain) | Eritrocito/Volumen de la muestra: Synonyms: Cuantitativo |
es-MX | Spanish (Mexico) | Hematocrito: |
fr-CA | French (Canada) | Hématocrite: |
fr-FR | French (France) | Hématocrite: |
it-IT | Italian (Italy) | Ematocrito: Synonyms: Ematologia (coagulazione) conta differenziale Frazione di Volume Punto nel tempo (episodio) Sangue |
ko-KR | Korean (Korea, Republic Of) | 적혈구용적률: |
nl-NL | Dutch (Netherlands) | erytrocyt/monstervolume: |
pt-BR | Portuguese (Brazil) | Hematócrito: Synonyms: ; |
uk-UA | Ukrainian (Ukraine) | Гематокрит: Synonyms: Auto; |
zh-CN | Chinese (China) | 红细胞/标本体积: Synonyms: RBC; |
Example Units
Unit | Source |
---|---|
% | Example UCUM Units |
% | REGENSTRIEF |
L/L | eCHN |
LOINC Terminology Service (API) using HL7® FHIR® Get Info
Requests to this service require a free LOINC username and password. Below is a sample of the possible capabilities. See the LOINC Terminology Service documentation for more information.
- CodeSystem lookup
- https:
//fhir.loinc.org/CodeSystem/$lookup?system=http: //loinc.org&code=4544-3
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://